Compur STATOX 4120 User Manual
Operation Manual
Compur Statox 4120
Compur Statox 4120
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Copyright Compur Monitors GmbH & Co. KG
Published by: Compur Monitors GmbH & Co. KG
Weissenseestrasse 101
D-81539 München
Tel. 0049 (0) 89 62038 268
Fax. 0049 (0) 89 62038 184
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Compur Statox 4120
Contents
Seite
1. Important notice 4
2. The Statox 4120 System: Purpose of use and description 4
2.1 Statox 4120 sensor head 5
2.2 Statox 4120 rack 6
2.3 Statox 4120 control module 8
2.4 Diagnostic box 9
3. Installation and electrical connections 10
3.1 Statox 4120 sensor head 10
3.1.1 Mounting 10
3.1.2 Connecting the signal cable 11
3.2 Statox 4120 rack 13
3.3 Statox 4120 control module 14
3.4 Switch positions of the sensor head pcb 15
4. Compur Statox 4120 operation 18
4.1 Start - up 18
4.2 Alarm thresholds 18
4.3 Detection mode 18
4.4 Self test of the system 18
4.5 Manually triggered self test of the system 19
4.6 System failure 19
5. Trouble shooting 19
5.1 Using the diagnostic box 20
5.1.1 Operation and error codes of the diagnostic box 20
5.1.2 Status messages of the sensor head 21
6. Maintenance and calibration 22
6.1 Inspection Statox 4120 sensor head 22
6.2 Sensor head calibration 23
6.2.1 Using span gas 23
6.2.2 Use ex-works calibration 24
7. The maintenance request option 25
8. The option analog output inhibition 28
9. The option zero adjustment 29
10. Technical data 30
11. Accessories and spare parts 32
Addendum: Declaration of conformity 34
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Compur Statox 4120
1. Important notice
Statox 4120 is an explosion proof system for the detection of toxic gases. It can be operated in
hazardous areas classified division 1 and 2.
Before installing and putting Statox into operation read and observe this manual!
To operate the system safely, observe this manual carefully. It must be operated and maintained by
qualified and authorised personnel. No other application than ambient air monitoring of the gas
specified is authorised by the manufacturer.
Safety guidelines
Prior to connecting and installing the Statox 4120 system check if all any safety – relevant
parameters of the system and its environment are in accordance with specifications and
local regulations.
If the Statox sensor head is installed in a potentially hazardous atmosphere the safety
relevant parameters of the sensor head and the control module must be observed. Please
use cable specified as recommended in this operation manual.
Operating conditions must not exceed the specifications.
The alarm relays of Statox 4120 are only safe to operate 24 V DC. Do not connect to mains.
Maintenance work must be carried out by trained personnel only.
Use exclusively original spare parts, accessories and consumables.
If the safety guidelines are not observed, the Ex approval will be void!
The instrument has to be inspected and serviced in regular intervals by trained personnel. For service
or training contact your local Compur Monitors representative. The maximum maintenance interval
should be 6 months.
2. The Statox 4120 system: Purpose of use and description
Compur Statox 4120 is a stationary toxic gas detection system. It monitors continuously ambient
atmosphere indoor and outdoor. It`s integrated self test provides maximum safety of operation.
Two user - adjustable alarm thresholds A1 und A2 can be set to any value within the measuring range.
It consists of these components:
Statox 4120 sensor head
Statox 4120 rack
Statox 4120 control module
Diagnostic box
The Statox 4120 control module communicates a digital signal via a two-wire cable with the sensor
head. It operates as power supply, alarm device and signal display. The system permanently checks
itself for proper function and will alarm if any parameter is geting out of specifications. Sensor
calibration and system fault diagnosis is easily achieved using the Statox portable diagnostic box.
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Compur Statox 4120
2.1 Statox 4120 sensor head
pic. 1: Statox 4120 sensor head
1 Bottom part
2 Statox 4120 sensor
3 Statox 4120 dust filter
4 Gas generator
5 Statox 4120 pump
6 Statox 4120 filter cartridge
7 Buffer battery for pump operation
8 Water container
9 Electronics
10 Opto - coupler for communication with the diagnostic box
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Compur Statox 4120
pic. 2: Statox 4120 sensor head for Cl
Operation principle
Ambient air enters the sensor (2) by diffusion through an opening at the bottom. The sensor creates a
current - signal proportional to the gas concentration. This signal is amplified, temperature
compensated and linearised. As a digital signal it is transmitted to the control module.
To protect the sensor from being poisoned by a high gas concentration, the Statox features a built – in
air purge. This is activated when the gas concentration exceeds 95 % of the measuring range and
stops when it has dropped below 80 %.
The battery pack (7) buffers the energy demand of the built – in pump (5). It is on permanent trickle
charge. The pump is activated in the protection mode and during the self test to purge the sensor and
provide test gas from the gas generator (4) to the sensor.
und ClO2
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2.2 Statox 4120 rack
The Statox 4120 rack and the Statox 4120 control module provide the power supply for the sensor
head. They are certified explosion proof [EEx ib] IIC. The rack must not be installed in certified
areas!
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Compur Statox 4120
Construction:
The system consists of a 19“-4-HE rack with backplane and up to nine Statox 4120 control modules.
Each Statox 4120 sensor head is communicating with one control module. The Statox 4120 rack is
available in following designs:
STATOX 4120 Rack ½ x 19“ for 4 Control modules
STATOX 4120 Rack 19“ for 9 Control modules
STATOX 4120 Rack 19“ for 9 Control modules / RFI shielded
STATOX 4120 Desk case for 4 Control modules
STATOX 4120 Desk case for 19“ Rack with 9 Control modules
Connections:
On the backplane (pic. 3) you find the following terminals:
power supply 230 V/AC (115V/AC)
Intrinsically safe terminals (signal cable, 22V/DC, 50mA) for data transmission and sensor head
power supply.
Analog outputs: 0-1V
4-20 mA
Potential free relays: Pre-alarm A1
Main alarm A2
System alarm SF
The A1 and A2 relay signal of the Statox 4120 control module is programmable.
pic.3: Electrical connections
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Compur Statox 4120
2.3 Statox 4120 control module
Each Statox 4120 Control module has its own power supply. The intrinsically safe sensor head supply
circuit is supplied by a separate secondary winding.
pic.4: Statox 4120 Rack
1 19“ Rack 9 LED A1
2 Statox 4120 control module 10 LED A2
3 Button A2 11 Potentiometer for A2
4 Button A1 12 Potentiometer A1
5 Button T 13 Bar graph display
6 Button R 14 Blind panel
7 LED SR 15 Rail
8 LED SF 16 ppm Scale
Bargraph display (13)
- Actual measured concentration value.
- Flashing when measuring range is exceeded and pump is on.
LED SR (7) „System ready“
- On if system is working properly.
- Flashing after power up until system is communicating fault - free.
- Flashing while diagnostic box is connected.
LED SF (8) „System Fail“
- On if a system failure has occurred. (Self test not passed, communication error, cable
interrupted).
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Compur Statox 4120
LED A1 (9)
- On if pre - alarm threshold is exceeded
Display A2 (10)
- On if main alarm threshold is exceeded
Button A1 (4)
- Press and hold button A1 to display A1 threshold. Adjust with Pot. (12). A1 must be < A2.
Button A2 (3)
- Press and hold button A2 to display A2 threshold. Adjust with Pot. (11).
Button T (5) „Test“
- Initiates self test.
Button R (6) „Reset“
- Rests Alarms A1, A2 und SF provided the reason for the alarm has disappeared. (If SF has
been triggered by a not passed self test, only a successful self test will reset it).
2.4 Diagnostic box
pic.5: Diagnostic box
The diagnostic box must not be charged in classified areas or with other than charger Art.# 518850.
It has the following purposes:
Calibration
Fault diagnosis
On site display
Function test
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Compur Statox 4120
3. Installation and electrical connections
3.1. Statox 4120 sensor head
3.1.1. Mounting
The sensor head should be installed as close as possible to potential leaks. If it is used as industrial
hygiene device it should be located between a potential leak and personnel working in the area.
Parameters such as:
Air flow (wind, ventilation, thermal conditions)
Access from top (removing the cover) and bottom (loosening the screws)
Specifications of the gas to be detected (specific weight)
Protection from direct sunlight, splash water and dust must be taken care of.
Fasten the sensor head with three nylon screws on the mounting brackets using the rubber bearings
as electrical isolation (these accessories are included).
pic.6: Mounting the sensor head
Mount the sensor head in horizontal position +/ 15%. Assure there is free gas access to the sensor.
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Compur Statox 4120
A
pic.7: Drilling plan for the mounting brackets
3.1.2. Connecting the signal cable
The signal cable connects sensor head and control module. Use only shielded cable. The maximum
cable length depends on the cable specifications.
Cable:
Length l
Capacity CL [pF/m]
Inductivity LL [mH/m]
Approved parameters:
, IO, CO, LO
U
O
Conditions: UO < U
and IO < Ii and l x CL < CO - C
i
pproved parameters:
, Ii, Ci, Li
U
i
and l x LL < LO - Li
i
pic.8: Two wire signal cable
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