Digital thermometer

General description

 This series of temperature transmitters are installed on site with electrical isolation.

 Receiving thermal resistance, thermocouple, resistance, millivolts

 Signal input and can be converted to 4-20ma signal output.

 The transmitter can be configured through the button on the instrument panel, or through the button

 Connect to PC configuration via 1 USB modem.

 Functional specification

 The input

 Thermal resistance/resistance

 LD heat resistance

 Pt100/Pt1000 conforms to IEC60751 standard.

 Resistance value

 0... 400

 0... 4000

 Connect the cable

 Maximum sensor line resistance (Rw) per circuit; 50.

 Meet the requirements of NE89 (January 2009).

 Two - wire circuit: up to 100 line resistance can be compensated.

 Sensor fault signal

 RTD: short circuit and circuit break

 Linear resistance measurement: circuit break

 Thermocouple/voltage

 Degree,

 K,N,E,J,T,B,R,S accord with IEC60584 standard.

 Voltage value

 - 125... 125 mv

 Connect the cable

 Maximum sensor line resistance (RW) per circuit: 1.5K, total resistance 3K

 Input resistance

 10 m or more

 Built-in temperature compensator

 Pt100, IEC 60751 C1. B

 Sensor fault signal

 Thermocouple: disconnect

 Linear voltage measurement: circuit break

The output

 Transmission characteristics

 Linear output with temperature, resistance and voltage.

 The output signal

 4-20 ma

 Fault current signal

 Power supply (support reverse polarity protection)

 Two-wire system, power line equals signal line

 The power supply voltage

 The operating voltage is 12-35v.

 The installation

 The transmitter can be mounted directly to the sensor

 Remote installation can also be achieved by mounting bracket

 Electrical connections   2 m20x1.5 outlets or 2 npt1/2 outlets (via adapter)

 Protection grade   IP66 and IP67

 The weight of the  1 kg

The basic information

 Electrical edge

 1KV AC (input/output)

 Input filter

 50/60 hz

 Damping time

 1-32s can be set, the default is 1S

 The refresh rate

 0.5 S or less

 Operating temperature

 40 ℃ -- 85 ℃

 When the temperature is lower than -30℃, the LCD may not display properly, and the display update rate will decrease.

 Transport/storage temperature

 - 50 ℃ to 85 ℃

 Maximum permissible humidity

 5-100% RH

 Physical specifications

 Overall dimensions

 See section 6 "dimensions"

 Junction box material

 Die casting low copper aluminum

 color

 Blue RAL9002

 Cold end compensation accuracy

 Pt100 DIN IEC 60751 c1. B, 0.3℃ (thermocouple only)

 Environmental temperature effect

 See table 1 on page 2

 The power influence

 The power impact per volt is 0.005%

 The stability of

 0.1 or 0.1% (whichever is higher) of the temperature transmitter reading for 12 months

 Vibration resistance

 During work and transportation, the displacement is 10-60hz 0.21mm

 60-2000 hz 3 g

Electromagnetic compatibility

 Meet the level requirements of IEC61326(2006) and NAMUR NE21

Table 1 influence of measurement accuracy and ambient 

Note: 

1) the measurement accuracy is subject to the large value of fixed value and range value:

 2) the influence caused by the change of ambient temperature is subject to the large value of the variable value and the range value.