Summary for Two Channel Temperature Indicator AI-702M High Quality Fast Delivery

AI-702M, AI-704M and AI-706M multi-channel indicators provide 1-2, 1-4, 1-6 channels of independent process indications, and are ideal for the measurement, indication, alarm, calculation and retransmission of temperature, pressure, flow, level and humidity etc.

Main Features for Two Channel Temperature Indicator AI-702M High Quality Fast Delivery

• Programmable and modular inputs. Multiple input types of thermocouples and RTDs, voltage/current inputs and two-wire transmitters are field- selectable.
• Each channel can have independent input specification. All channels are equipped with digital adjustment and filtering functions and each channel have individual digital adjustment and filtering parameters.
• Customized channel number for easy reading when measuring more than 6 channels, e.g. instrument 1 shows CH1 ~ CH6 while instrument 2 shows CH7 ~ CH12.
• High performance hardware design, greatly reduce the temperature drift and the interference between channels, thus multi-channel measurement accuracy is 0.2% full scale, the same as that of single channel.
• Provide high accuracy compensation function such as ice-point compensation, copper resistance compensation and thermostat compensation to thermocouple inputs.
• Build-in accurate internal calculation functions including square root extraction, summation, subtraction and multiplication.
• Support up to 2 isolated retransmission output. Any input channel can be retransmitted to OUTP port or all channels are cyclically retransmitted.
• Provide manual/auto pilot display, with 2 pilot speed selectable.
  Support up to 7 on-off signal inputs/outputs which can work as alarm output or on-off signal I/O for host computer.
• Each input channel has independent low/high limit alarm which can be assigned to any alarm output.
• Advanced communication function. Provide high accuracy and stability multi-channel analog data sampling function to host computer. The host computer can also input up to 7 channel on-off signal or execute on-off operation via the indicator.
• Up to12 customized field parameters.
• Multiple dimensions are selectable. 100~240VAC universal power supply.
• Achieved ISO9001 and CE certificates, comply with EMC standard, high reliability and stability. The power and I/O terminals have passed the anti-interference test of 4KV/5KHz burst of pulses.

Technical Specifications for Two Channel Temperature Indicator AI-702M High Quality Fast Delivery

1. Input:

Thermocouples: (with J1 module): K, S, R, E, J, T, B, N and WRe5-WRe26

Two-wire RTDs: (with J2 module that supports 2 inputs): PT100, Cu50, 0~80 ohm, 0~400 ohm

Three-wire RTDs: (with J0 module that supports 1 inputs): PT100, Cu50, 0~80 ohm, 0~400 ohm

Linear mV voltages: (with J1 module) 0~20mV, 0~60mV, 0~100mV, 0~1V

Linear voltage: (with J3 module) 0~1V, 0~3V, 0~5V, 1~5V etc.

Linear current: (with J4 module) 0~12mA, 0~20mA, 4~20mA etc.

Square root extraction calculation input: (with J3 voltage or J4 current input module) 1~5V, 4~20mA etc.

Two-wire transmitter inputs: (with J5 module that provides 24VDC power supply) Connect to 4~20mA two wires transmitter

2. Maximum lead wire resistance for RTD input:

2-wire type RTDs:

2 ohm for Pt100 or 0~400 ohm input ;1 ohm for Cu50 and 0-200 ohm input;

3-wire type RTDs:

5 ohm

3. Measurement range:

K(0~1300℃), S(0~1700℃), R(0~1700℃), T(-200~+350℃), E(0~1000℃), J(0~1200℃), B(0~1800℃), N(0~1300℃), WRe5-WRe26(0~2300℃),

Pt100(-200~+800℃), Cu50(-50~+150℃)

Linear input:-1999~+9999 set by user

4. Measurement accuracy: ±0.2%FS±1digit / ±0.3%FS±1digit (only for Cu50)

Note 1: For thermocouple inputs with internal cold junction compensation, 1℃ CJC error should be taken into consideration. For those with Cu resistor, ice point or thermostat bath compensation, the accuracy is as above.
Note 2: Accuracy is not guaranteed between 0 and 600℃ for type B thermocouple input.

5. Temperature drift: ≤0.01%FS/℃ (typical 50ppm/℃)

6. Electromagnetic compatibility: IEC61000-4-4, ±4KV/5KHz; IEC61000-4-5, 4KV

7. Isolation withstanding voltage: Between power, relay contact and signal terminals ≥ 2300VDC; Between isolated eletroweak signal terminals ≥ 600VDC

8. Response time: ≤1.5 seconds(if digital filter parameter is set as 0 or 1)

9. Automatic pilot time interval: Approx. 1.2s or 2s configurable

10. Alarm function: High and low alarm, configurable separately for each channel

11. Alarm output: 

Relay contact output(NO or NC):250VAC/1A or 30VDC/1A

No contact discrete output(NO or NC):250VAC/0.3A(transient current 1A)

12. Power supply: 100~240VAC/50Hz, 24VDC

13. Power consumption: ≤6W

14. Work ambience: Temperature -10~+60℃, Humidity ≤ 90%RH

Terminal Layout and Wiring for Two Channel Temperature Indicator AI-702M

Ordering Code Definition for Two Channel Temperature Indicator AI-702M

The ordering code of AI-702M/704M/706M series instrument is made up of 9 parts. For example:

                      AI-706M     A    J1   J2    J5    L5     L5    S   -   24VDC
                                  1            2     3     4      5      6        7     8           9

Above code symbols a AI-706M instrument with: front panel dimension 96*96mm, 2 thermocouple inputs, 2 two-wire RTD inputs, 2 current inputs, 4 alarm relay outputs, RS485 communication interface and the supply power is 24VDC. The explanation for each code is below:

Part 1 Model of the instrument

AI-702M/704M/706M respectively indicate 2, 4, 6 channels indicator.

Part 2  Dimension

The depth of the instrument is about 13.2mm(foreside)+100mm(rearward).

Part 3~8 Shows the module type installed on sockets

N: No module installed
J0: 1 channel three-wire RTD, thermocouple or mV voltage input
J1: 2 channel two-wire thermocouple or mV voltage inputs
J2: 2 channel two-wire RTD inputs
J3: 2 channel voltage inputs of 0-1V, 0-3V, 0-5V or 1-5V etc.
J4: 2 channel current inputs of 0-12mA, 4-20mA, 0-20mA etc.
J5: 2 channel two-wire transmitter provided 24VDC power supply.
I5: 2 channel on-off signal inputs, drycontact
L1: Single relay contact (NO+NC) output. (30VDC/2A, 264VAC/2A)
L2: Single relay contact (NO+NC) output. (30VDC/1A, 264VAC/1A)
L4: Single relay contact (NO+NC) output. (30VDC/2A, 264VAC/2A)
L5: Dual relay contact (NO) outputs. (30VDC/2A, 264VAC/2A)
W1: 1 channel thyristor normal open output. (“Burnt proof” technology, able to stand 0.3A continuous current or 1A transient current)
G: 1 SSR voltage output (12VDC/30mA)
G5: 2 SSR voltage outputs (12VDC/30mA)
S: Photoelectric isolated RS485 interface
S4: Photoelectric isolated RS485 interface with isolated power supply.
X3: Photoelectric isolated linear current output
X5: Photoelectric isolated linear current output with its own isolated power supply.
V5: Photoelectric isolated 5VDC/50mA power supply for transmitter.
V10: Photoelectric isolated 10VDC/50mA power supply for transmitter.
V12: Photoelectric isolated 12VDC/50mA power supply for transmitter.
V24: Photoelectric isolated 24VDC/50mA power supply for transmitter.

Part 9 Shows power suppl

Null indicates 100~240VAC power supply and "24VDC" indicates 20~32VDC/AC power.

Front Panel and Operation for Two Channel Temperature Indicator AI-702M

You will get:

A piece of temperature indicator;

A paper of user manual;

5-year warranty card and Quality Approval card;

A lable of units;

A pair of installaton brackets;

Nice package carton box with Yudian logo.

• Factory with 26 years experience.
• Three to ten years warranty time.
• Quick delivery ( within 3 working days).
• Retail/ Wholesale/ OEM/ ODM available.
• Better price for bulk order.
• We provide after sales service and technical assistance as customers requirement and needs.

If you are interested in our products or have any questions, please do not hesitate to contact us.