MIKASE LABORATORY - PT MITRA KATIGA SEJAHTERA / SUPPLIER ALAT UJI KUALITAS UDARA, AIR, CUACA , KEBISINGAN SERTA GETARAN

Specification

HD 778TR1, HD 978TR1 and HD 978TR2 are 4… 20mA two-wired passive transmitters with a microprocessor. These can be configured for thermocouple sensors type K, J, T and N. They convert the voltage value generated by the
thermocouple into an electric linear signal within the 4… 20mA range. The use of digital devices obtains excellent precision and stability in time. The user can set the 4… 20mA ( or 20… 4mA) output in any temperature range included in the measurement range of the individual thermocouples with a minimum range of 50 ° C. The range and type of thermocouple are simply set by using one button. A led signals the alarm situation ( out of order or unconnected sensor) and helps the user during the programming phases. The transmitters are also protected
against polarity inversion. HD778TR1 is specifically designed to be installed on DIN B connection heads; HD978TR1 and HD978TR2 are suitable for mounting on 35 mm DIN bars. In addition to the 4… 20mA output, HD978TR2 has a 31D2 digit
display ( height 10 mm) that allows the measured temperature to be displayed.

Technical information @ 25° C and 24Vdc
INPUT HD778TR1 HD978TR1 HD978TR2
Sensor Type of thermocouple: K, J, T and N
Connection Two-wired passive transmitter
Measurement range
Thermocouple K: -200° C … + 1200° C
Thermocouple J: -200° C … + 800° C
Thermocouple T: -200° C … + 300° C
Thermocouple N: -200° C … + 1200° C
Linearization EN 60584-1-2
ASTM E 230 - ANSI ( MC96-1)
Default range Tc = K - Range = 0...1000° C
Minimum measurement range 50° C
Speed of conversion 2 measurements per second
Precision ± 0, 04% FS± 0, 04% of the reading or 0.5° C ( the
greater of the two values)
Cold coupling temperature range -30 … + 80° C 0 … + 70° C
Functioning temperature -30 … + 80° C 0 … + 70° C
Storage temperature -40 … + 80° C
OUTPUT
Type of output ( note 1)
4...20 mA ( or 20...4 mA) two-wired 22 mA, in case of out of order or unconnected sensor
Resolution 4 ¼ A
4 ¼ A
Display:
0.1° C T200° C
Power voltage 9...30V dc ( protection against polarity inversion)
Sensitivity to Vdc power voltage
variations 0.4 ¼ A/ V
Load resistance
RLMax = ( Vdc-9) / 0.022
RLMax = 625© with Vdc = 24 Vdc
Input/ output galvanic insulation 50Vdc ( checked at 250V)
Red led
Turns on during the programming phase if the thermocouple is out of order or unconnected.
Warm-up time 2 minutes