PHD-11TT-*8

TC input isolated safety barrier

1 input 1 output

TC signal input

1:1 millivolt signal output

product details

Overview

The thermocouple input isolation safety barrier can transmit the millivolt signal from thermocouple (TC) in the dangerous area to the safe area in 1: 1.

This product requires independent power supply, with isolated power supply, input, and output terminals.

"*" represents the input type of the thermocouple, and the specific model is represented by a code (see "Input Signal Type and Range Table" for details).

Input signal types and measurement range
Code	TC model	Measurement range	Minimum range	Conversion accuracy
1	K	-200~1370℃	50℃	0.5℃/0.1%
2	S	-50~1760℃	500℃	1.5℃/0.1%
3	E	-140~1000℃	50℃	0.5℃/0.1%
4	J	-160~1200℃	50℃	0.5℃/0.1%
5	B	250~1800℃	500℃	1.5℃/0.1%
6	T	-200~400℃	50℃	0.5℃/0.1%
7	R	-50~1760℃	500℃	1.5℃/0.1%
8	N	-200~1300℃	50℃	0.5℃/0.1%

Specifications

Input in harzadous area
Input signal	K, S, E, J, B, T, R, N thermocouple signals (see "Input Signal Type and Range Table" for details)
Signal range	-20~80mV.
Safety side output:
Output signal	Thermocouple 1: 1
LED indicator	Green: Power indicator
Output accuracy	0.05%F.S
Response time	Reaching 90% of the final value within 300ms
Temperature drift	0.005%F.S/℃
Temperature parameters	Working temperature: -20℃~+60℃, storage temperature:-40℃~+80℃
Relative humidity	10%~95% RH no condensation
Dielectric strength	Between intrinsically safe side and non-intrinsically safe side (≥ 3000VAC/min); between power supply and non-intrinsically safe terminal (≥ 1500VAC/min)
Insulation resistance	≥100MΩ (between input/output/power supply)
Electromagnetic compatibility	According to IEC 61326-1(GB/T 18268), IEC 61326-3-1
MTBF	100000h
Wire requirements	Cross section ≥ 0.5mm2; Insulation strength ≥ 500V
Applicable field equipments	K. S, E, J, B, T, R, N TC sensors
Installation place	Installed in a safe zone, it can be connected to intrinsic safety instruments in hazardous areas up to Zone 0, IIC, Zone 20, and IIIC

Dimension

Schematic diagram

Note:

1. The power rail function is an optional function, and users need to specify the power supply method when placing an order

The selection of power rail connectors can refer to page 89 of the "Annex"

Intrinsically safe certification

Explosion proof mark	[Ex ia Ga]lIC [Ex ia Da]lllC
Explosion-proof standard	GB/T3836.1-2021 GB/T3836.4-2021
Terminals 3-4	Um:250V AC/DC Uo=8.4V DC lo=31mA Po=65.1mW Co=4.8μF Lo=20mH
Certification body	CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products)

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