Number of channels: 1
Ex mark: [ Ex ia ]ⅡC
Applicable areas: Installed in safe zones and can be connected with intrinsic safety instruments in zero zones,ⅡC, and T4-T6 danger zones.
Power supply voltage: 20-35V,d.c.
Current consumption: ≤ 50mA (24V supply, when 20mA output)
Signal of the safe side:
Output current: 4-20mA, d.c.; Load resistance: RL≤ 550Ω
Output voltage: 1-5V,d.c.; Load resistance:：RL≥350kΩ
Signal of the dangerside: The input signal type, range and the corresponding conversion precision as shown in the following table (not including the cold end compensation precision):
Note: The output precision of “%” is equivalent to the range of the set, take larger value of range deviation and absolute deviation in the application.
Below the lower limit of the range, L light flashing, the current output is approximate 3.8mA
Above the upper range, H light flashing, the current output is approximate 20.8mA
While open circuit of thermocouple, L and H indicator lights flash at the same time and the current output is approximate 21mA
Temperature drift: 0.1%F.S./10℃
Cold breaking compensation precision: ±1℃(Compensation range: -20℃ – ＋60℃)
Power source protection:Reverse polarity protection in power source
Electromagnetic compatibility: Compliant with GB/T 18268(IEC 61326-1)
Dielectric strength: Non-intrinsic safety terminal – intrinsic safety terminal ≥2500V, a.c.; source- non-intrinsic safety terminal ≥500V, a.c.
Insulation resistance: Source, between the shell and the non-intrinsic safety terminal and intrinsic safety terminal ≥100MΩ；500V.d.c.
Weight: Around 110g
Field equipment applicable: R, K, E, T, J, B ,S, Nthermocouple and mA transmitter signal.
Note: 1. it’s forbidden while using HHC (HART manipulator) in danger area and safe area at the same time;
2. HHC (HART manipulator) must be explosion-proof certification when used in danger area.
When connecting the isolation safety barrier with the field intrinsic safety instrument to form an intrinsic safety explosion-prevention circuit (intrinsic safety circuit) system, the following should be verified before using the system.
The isolation safety barrier should be installed in a safe place, and be compliant with relevant regulations under the “Installation and Acceptance Standards for the Installation of Electrical Equipment in Explosion-prone and Fire-prone Environments” under the GB 50257-1996, “Section 15 of Electrical Equipment for Use in Environments with Explosive Gases: Electrical Installations in Danger Zones (except coal mines)” under the GB 3836.15 – 2000, “Section 13 of Electrical Equipment for Use in Environments with Explosive Gases: Inspection of Electrical Equipment for Use in Environments with Explosive Gases” under the GB 3836.13-2003, and “Section 16 of Electrical Equipment for Use in Environments with Explosive Gases: Inspection and Maintenance of Electrical Devices (except coal mines)” under the GB 3836.16-2006.