Gestra ORGS11-1

Oil Detector & Alarm for Cooling Water ORGS 11-2

Data Sheet 810647-06 Issue Date: 03/21
Oil Detector & Alarm for Cooling Water
ORGS 11-1
ORGS 11-2
ORGS 11-2
Description
Technical Data
Use oil detector & alarm ORGS 112 only for signalling ingress of oil in cooling water systems.
Flow velocity 100 l/h to 300 l/h, recommended 200 l/h
Function
Pressure drop Δpv 0.06 bar (under test conditions)
The oil detector & alarm ORGS 112 is an equipment unit consisting of the measuring electrode ORGS 11-1 and a
measuring pot.
The measuring electrode ORGS 11-1 is a compact-type system that comprises the measuring electrode and an elec
tronic module integrated in the terminal box. The electrode operation is based on the conductive measuring principle us
ing the electrical conductivity of the water for signalling water level. The electronic module detects whether the electrode
rods are submerged or exposed and, in the event of ingress of oil, energises the output contacts.
A water sample, taken from the cooling water system down stream of the location at the highest point where ingress of
oil might occur, is fed from below into the measuring pot of the ORGS 11-2. If the water is contaminated with oil, the oil
droplets - due to their lower density - ascend and accumulate on top of the water and, consequently, the electrode rods are
now submerged in this oil film.
Oil is not electrically conductive, which means that no cur rent can flow between the electrode rods of the measuring
electrode. In this case the oil detector & alarm will signal ingress of oil and trigger an alarm.
The amount of oil necessary to signal ingress of oil depends on the design of the measuring pot and the length of the
electrode rods. The measuring pot is matched to the electrode such that ingress of oil is signalled when the oil content limit
of approx. 50 ml is reached.
The equipment can detect all substances that are insoluble in water, not emulsified and lighter than water. In addition,
the equipment can also detect all liquids with a conductivity value below the adjusted response sensitivity.
Directives and Standards Approvals for Marine Applications The equipment is approved for marine applications.
LV (Low Voltage) Directive and EMC (Electromagnetic Compatibility) The equipment meets the requirements of the Low Voltage
Directive 2014/35/EU and the EMC Directive 2014/30/EU.
ATEX (Atmosphère Explosible) According to the European Directive 2014/34/EU the equip
ment must not be used in potentially explosive areas.
Design
ORGS 112:
Equipment module with three isolating valves and deaerator, ready for connection.
ORGS 111 :
Measuring electrode as spare part for equipment module
ORGS 112
Technical Data Oil detector & alarm ORGS 112 Service pressure 6 bar Service temperature
110 °C
- continued -
Alarm Raised when approx. 50 ml oil has accumulated Water inlet, drain Ball valve with EOconnection 15L
Water outlet Ball valve with EOconnection 12L Weight approx. 7.4 kg Measuring electrode ORGS 111
(component of ORGS 112) Mechanical connection Screwed G 1 A, ISO 228 Materials
Screw-in body: 1.4571, X6CrNiMo17-12-2 Electrode rods: 1.4571, X6CrNiMo17-12-2
Terminal box: 3.2161 G AlSi8Cu3 Supply voltage 230 V +/- 10 %, 50/60 Hz 115 V +/- 10 %, 50/60 Hz
24 V +/- 10 %, 50/60 Hz (optional) Power consumption 5 VA Fuse external slow-blow 0.5 A
internal thermal fuse Tmax = 102 °C Response sensitivity Range 1: 10 µS/cm
Range 2: 0.5 μS/cm Code-switch selectable Electrode voltage 10 Vpp Outputs for control circuit
2 volt-free change-over contacts, 8 A 250 V AC / 30 V DC cos ϕ = 1 De-energizing delay: 3 sec.
Provide inductive loads with RC combinations according to manufacturer's specification to ensure interference
suppression.
Indicators and adjusters 2 red LEDs indicating "Electrode submerged" and "Output
relay energized" (no ingress of oil) 1 four-pole code switch for selecting the response
sensitivity Electrical connection 2 cable gland with integrated cable clamp M20 x 1.5
1 five-pole screw-type terminal strip, detachable, conductor size 1.5 mm2
Protection
IP 65 to DIN EN 60529 Max. admissible ambient temperature Max. 70 °C Storage and transport temperature
– 40 up to + 80 °C Certification Marine applications Det Norske Veritas /
Germanischer Lloyd
Bureau Veritas
Lloyds Register