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OhmGuard – Hose continuity test clamp
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messa-a-terra-autocisterne
Newson Gale

OhmGuard – Hose continuity test clamp

OhmGuard OGC / OGCL

Intrinsically safe clamp for Zone 0/20 that verifies the electrical continuity of flexible hoses before transfer: green LED when resistance is ≤100 Ω (OGC) or ≤10 Ω (OGCL).

ATEX
IECEx
CSA
NEC/CEC
Description
Technical Specifications
Applications
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Datasheets

OhmGuard is the Newson Gale clamp that verifies the electrical continuity of flexible hoses used for loading and unloading flammable liquids. Before transfer, the clamp measures the circuit resistance between the hose coupling and the earth point: a flashing green LED confirms that the hose is able to dissipate electrostatic charges.

Key features

  • Two thresholds: 100 Ω (OGC) and 10 Ω (OGCL)
  • High-visibility flashing green LED on the clamp
  • Intrinsically safe monitoring circuit, 9 V battery powered
  • Stainless steel body with tungsten carbide teeth
  • Available with OGC/BOX junction box or with a second VESX90-IP / VESX45-IP clamp

Use the filters in the Variants and codes section to find the exact code.

Zone 0
Explosive gas atmosphere present continuously or for long periods
Zone 1
Explosive gas atmosphere likely to occur in normal operation
Zone 2
Explosive gas atmosphere unlikely to occur and, if it does, only for a short period
Zone 20
Explosive dust atmosphere present continuously or for long periods
Zone 21
Explosive dust atmosphere likely to occur in normal operation
Zone 22
Explosive dust atmosphere unlikely to occur and, if it does, only for a short period
Class I Division 1
Area where flammable gases or vapours are present under normal operating conditions
Class I Division 2
Area where flammable gases or vapours are present only under abnormal conditions
# Certifications Zone: 0/20 ATEX certification: Ex II 1 GD – Ex ia IIC T4 Ga; Ex ia IIIC T135°C Da (ExVeritas 19ATEX0543) IECEx certification: Ex ia IIC T4 Ga; Ex ia IIIC T135°C Da (IECEx EXV 19.0058) NEC 500/CEC certification: cCSAus # Performance Product type: Hose continuity test clamp Resistance threshold: ≤100 Ω (OGC) · ≤10 Ω (OGCL) Power supply: 9 V lithium-manganese battery (BR2/BATT) Indicator: Flashing green LED Monitoring circuit: Intrinsically safe # Mechanical Material: Stainless steel with tungsten carbide teeth Ambient temperature: -40 °C / +60 °C
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Documentation by version
IECEx certificate EXV 19.0058
OhmGuard
Documentation by version
cCSAus certificate 2568210
OhmGuard (USA/Canada)
Documentation by version
Universal resistance tester manual
Universal tester (ER/URT)
No applications listed.