digital temperature display
instruction manual
please identify the registered trademark: YURON?
Beijing Yulong Instrument Co., Ltd.
I. Overview
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XMT series digital display instruments are a new generation of industrial automation measurement and control instruments developed in recent years. The instruments adopt advanced medium and large-scale integrated circuits, apply unique electric nonlinear correction technology, and the setting forms are analog knob setting and digital dip switch setting. There are XMZ .XMT series consistent with moving coil instruments and XMZA, XMTA, XMTD and XMTE series designed accorDINg to international din standards. Compared with traditional moving coil instruments and electronic regulators, it has the advantages of high display accuracy, good temperature control performance, strong earthquake resistance, good reliability, clear reading, ignoring the difference, and long-distance observation; Lightweight, convenient installation and other advantages. There are many kinds of adjustment forms, such as two-position, three-position, time proportional, thyristor continuous adjustment, PID adjustment, etc., and the output function of over-limit alarm can be added according to the needs of users. It is an updated product of XC series, TD series and TE series temperature control instruments, and can be widely used in plastic machinery, packaging machinery, food machinery, textile machinery, metallurgy, refrigeration, chemical industry, medical treatment and other industries for -2~16℃.
measuring and adjusting range of instrument, According to the matched temperature sensing element, select it in the following table:
(Table 1)
Matching temperature sensing element
Range ℃
Resolution
Nickel-Chromium–Copper-Nickel
E
(EA- 2 )
~3, ~4. ~13
electricity
heat
even
platinum rhodium–platinum
S(LB-3)
7~16
1℃
copper resistance
cu5
(g)
. ~199.9
.1℃
thermal
electrical
resistance
platinum resistance
Pt1
(BA 1 BA 2 )
~3, ~4 and ~ 6
1℃ < Instrument category
(Table 2)
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Type
Equipped with sensor
Function
XMZ-1□
XMZD-2□
Temperature display
XMT-1 □ (m)
XMTA-21□(M)
temperature display and position adjustment with over-limit alarm
xmt-12 □ (f)
xmta-22 □ (f)
temperature display and upper and lower limits 3. An instrument with "F" has a relay output
xmt-13 □ (m)
xmta-23 □ (m)
xmtd-23 □ m
xmte-23 □ m
xmt-da-83. > silicon phase-shifting trigger adjustment
XMT-17□
XMTA-27□
silicon zero-crossing trigger adjustment
XMT-18□
XMTA-28□
three-phase temperature display can
control silicon zero-crossing trigger adjustment
. -2)
S(LB-3)
if "□" is "2"
thermal resistance
Gu5(G)
Pt1(BA1 BA2)
if "□" is "3"
input voltage.
III. Main technical indicators
p>— 4 —
Overall dimensions and mounting hole dimensions of the instrument (Table III)
Instrument model
Overall dimensions (B×H×L)
Opening dimensions (B×H)
XMT, XMZ -1□□
16×8×15
152+1×76+1
XMT–8□□□
6×12×15
55+1×115+1
MXTA、XMZA
96×96×15
92+1×92+1
XMTD、 XMZA
72× 72× 15
67+1× 67+1
XMTA
48× 96× 12
42+1× 9+1
Note: B is the front width of the instrument, H is the height, and L is the depth of the table. XMTE, XMTD, xmt–8 □□□ series, 3-digit digital tube displays the measured value.
2. Display error: ≤ 1% 1 word, (or customer-defined error ≤ .5% 1 word);
3. set point error: ≤ 1% 1 word;
4. Control point switching difference: ≤ .5%
5. Cold end compensation: the error within ~4℃ is less than 2℃;
6. Time proportion adjustment: the proportion band is 3 ~ 6%, and the period is 3±1S；;
7. Over-limit alarm: the alarm output point exceeds the set value by 2-1% (full range), and the alarm elimination range is ≤ 1;
8. output pulse signal: phase-shifting pulse or zero-crossing trigger pulse with amplitude greater than 3V and width greater than 4us;
9. adjustment of p, I and d: (1) output ~ 1ma; (2) The load is 8 8 Ω; (3)P (proportional band) 4%; (4)I (integration time) 2.5min；; (5)D (differential time) 3S；;
1. Output contact capacity: AC 22V, 3A (resistive load) or 1A (inductive);
11. temperature coefficient: when it deviates from 2 2℃ in the range of ~5℃, its temperature coefficient is less than .5%/℃;
12. working power supply: AC 22V±1％%, 5Hz, power consumption less than 5w;
13. Working environment: no corrosive gas at ~5℃ and 3~85℃ relative humidity;
14. overall dimensions and opening dimensions: see table 3;
15. weight: about .8kg ..
IV. Use and adjustment
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1. Check whether the graduation number of the instrument is the same as that of the temperature sensing element;
2. The instrument equipped with thermocouple may not be connected with 15Ω external resistance, which will not affect the accuracy. If the distance is far, the thermocouple and instrument shall be connected with corresponding compensation wires, and the polarity shall not be reversed, so as not to affect the accuracy; The installation position of the sensor should correctly and timely reflect the temperature rise and fall of the measured object; If it is found that the display of the instrument is abnormal, check whether the sensor connection is open (the instrument has the function of disconnection protection); Generally, instruments equipped with thermal resistance are not connected with three 5Ω external resistors, but the specifications and lengths of the three connecting wires of thermal resistance should be the same. If the lead is long, it is recommended to use external resistors, and this should be stated when ordering.
3. Insert the instrument into the mounting hole, and properly tighten the upper and lower or two mounting screws. Be careful not to tighten the screws too tightly to avoid damaging the housing.
4. xmz, XMZA and XMZD models: connected with power supply and temperature sensing element, the measured temperature value can be displayed without adjustment.
5. xmt–11, 12, XMTA-21, 22, XMTD-21, 22, XMT-81, 82 models: after connecting the instrument cables properly, turn the switch to the "setting" position and turn the setting knob. At this time, the digital display shows the required temperature value; After adjustment, turn the switch to "Measure". At this time, the digital display shows the actual temperature value of the measured object. When the actual value is lower than the set value, the green light will be on, and the total low pass and total high break of the relay will be output. When the actual value reaches or exceeds the set value, the red light will be on, and the total Qualcomm and total low break of the relay will be output. For the instrument set by dip switch, just dial the dip switch to the required temperature value after wiring, and the control state is the same as above.
6. xmt–121 (f), 122(F), xmta–221 (f), 222(F), xmtd–221 (f), 222(F): after the instrument is connected properly, turn the switch to "lower limit setting". Turn the switch to "upper limit setting" and turn the corresponding upper limit setting knob, and the required upper limit temperature value will be displayed at this time; Then turn the switch to the "measurement" position, and the digital display shows the actual temperature value of the measured object. When the actual value is lower than the lower limit set value, the green light is on, and the upper limit relays are always low-pass and high-break; When the actual value reaches or exceeds the lower limit set value but is still lower than the upper limit set value, the green light and red light are all extinguished, and the lower limit relay is always low-cut and Qualcomm, and the upper limit relay is always low-cut and high-cut; When the actual value reaches or exceeds the upper limit set value, the red light is on, and the upper and lower limit relays here are always low-off and always Qualcomm. Generally, the output of the lower limit relay can be used for auxiliary heating control and the upper limit relay for heating control, or the output of the lower limit relay can be used for temperature control and the output of the upper limit relay can be used for over-temperature alarm. For instruments with suffix "f", the temperature value required by the upper limit must be adjusted to be higher than the temperature value required by the lower limit
— 6 —
. When the actual value is lower than the lower limit value, the green light is on, and the relay always turns low and heats up; When the actual value is higher than the lower limit and lower than the upper limit, it is still a total low pass, and the temperature is raised; When the actual value is higher than the upper limit, the red light is on, the relay is always Qualcomm and always low-off, and the heating is stopped. Only when the actual value is lower than the lower limit, the green light is on and always low-pass, and the whole process is repeated. There is only one relay output, so that it can be connected with the load conveniently.
7. xmt–131, 132, XMTA-231, 232, XMTD-231, 232, XMT-831, 832, XMTE-231, 232; When the actual temperature does not enter the proportional band, the green light is on, the relay is always low-pass and high-break, and the load is heated up; When entering the proportional band, the relay starts to switch regularly and the traffic lights change periodically. The higher the temperature is, the shorter the total low-pass time is, and vice versa. The instrument changes the temperature by changing the average heating power of the load. For example, instruments with over-limit alarm function, such as XMTA–2311, 2312, XMTA-2311, 2312, can be used for acousto-optic alarm or cooling device when the temperature exceeds the required temperature by 3–1%. Other methods of use are the same as XMT-11 and 12.
V. Precautions
1. When the instrument is kept, its environment should meet the technical requirements, and there should be no corrosive gas on site.
2. If the instrument damage is caused by poor manufacturing quality, it will be repaired free of charge within 18 months; If it is caused by unpacking, storage or improper use, our factory is responsible for lifelong maintenance, and the user will pay the repair cost as appropriate.
3. When ordering, the instrument model, the graduation number and measuring range of the temperature sensing element to be used shall be indicated in the contract, such as XMT-11, K, –13℃; If you need to buy temperature sensing elements, please also specify the graduation number, specification, length, etc.
4. If the instrument is used for measuring and controlling pressure, flow and liquid level, the name, model and specification of the matched detection element shall be informed;
5. Accessories: two sets of installers and one manual
6. Specially recommend new products
(1) YR series intelligent industrial temperature, pressure, flow, liquid level and humidity controllers/regulators.
features: 1. an instrument can be programmed with thermocouple signals such as k, s, n, b, e, j, t and WRe, thermAl resistors such as Pt1 and Cu5, and linear input signals such as –5v, 1–5v, ma and mV, with built-in high-precision nonlinear correction function.
2. programmable output: one instrument can adapt to SSR voltage, ~1 mA, 4~2 mA,
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~2 mA, SCR trigger output, relay output, etc.
3. Expert PID artificial intelligence control algorithm, self-tuning parameters, high precision and no overshoot control.
4.85 v ~ 264 vac power supply can be adapted, and all imported IC chips have strong anti-interference performance.
5. brief introduction of model and function
YR58T: intelligent P I D temperature controller (simple operation type). Programmable input of various thermocouples and thermal resistors; Modular output supports SSR voltage, relay contact switch and SCR zero-crossing trigger output; There are multiple alarm modes with upper and lower limits. With low price, strong function, high control accuracy (typically .1℃) and strong anti-interference performance, it is an ideal product to replace imported and domestic intelligent instruments.
YR78: expert P I D artificial intelligence adjustment, transmission and communication function
YR88: it has all the functions of YR78, and has manual/automatic undisturbed bidirectional switching function
YR88P: it has all the functions of YR88, and has 5-period program control function yr 78m/m2: 6-way/2-way display alarm.
6. Detailed instructions can be obtained from our company or distributors.
(2) YR-2/YR-3 series intelligent double digital display time relay:
Features: 1. Display set value and delay value at the same time.
2. Set the time range from .1 seconds to 99 hours and 59 minutes. High accuracy: the daily error is less than 5 seconds.
3. There are single delay type and cycle type for you to choose from (suitable for most time control occasions).
4. external dimensions: 48×48, 48×96, 96×96, 96×48, 72×72 and other external dimensions can be selected.
5. Omni-directional display of working conditions, reminding of misoperation, and low price and good quality
(3) Programmable time controller: the number of times the equipment is turned on and off is 64 times a day (32 segments), which is suitable for controlling the on and off of electrical appliances (or equipment) in a daily cycle for multiple periods.