Eaton Crouse-hinds series User manual

Z530 Mk2
MTL zirconia oxygen analyser
January 2017
INM MTL 130-0193 Rev 5
Instruction manual
MTL gas analysers & systems

ii INM MTL 130-0193 Rev 5
DECLARATION OF CONFORMITY
A printed version of the Declaration of Conformity has been provided separately within the original shipment of
goods. However, you can find a copy of the latest version at -
http://www.mtl-inst.com/certificates

INM MTL 130-0193 Rev 5 iii
CONTENTS
DECLARATION OF CONFORMITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
1 INTRODUCTION ....................................................................1
1.1 Manual symbols ...........................................................................1
1.2 Information ...............................................................................1
2 SPECIFICATION.....................................................................2
2.1 Sensor ...................................................................................2
2.2 Range....................................................................................2
2.3 Accuracy .................................................................................2
2.4 Stability ..................................................................................2
2.5 Speed of response .........................................................................2
2.6 Sample flow ..............................................................................2
2.7 Sample connections........................................................................2
2.8 Sample inlet pressure ......................................................................2
2.9 Sampling system material...................................................................2
2.10 Analogue output - isolated...................................................................3
2.11 Serial communications .....................................................................3
2.12 Ambient operating temperature range (sensor and circuit board) ..................................3
2.13 Power requirements........................................................................3
2.14 Dimensions ...............................................................................3
2.15 Weight ...................................................................................3
3 INSTALLATION .....................................................................4
3.1 Unpacking and visual checking...............................................................4
3.2 Mounting.................................................................................4
3.3 Electrical connections ......................................................................4
3.3.1 Power supply ..........................................................................4
3.3.2 Circuit board electrical connections ........................................................5
3.3.3 RS232 Connection ......................................................................6
3.4 Sample connections........................................................................6
4 COMMISIONING....................................................................7
4.1 Applying power ...........................................................................7
4.2 Configuration .............................................................................7
4.3 Introducing the sample .....................................................................7
5 MAINTENANCE AND CALIBRATION CHECKS ...........................................8
5.1 Calibration overview .......................................................................8
5.2 Calibration gases ..........................................................................8
5.3 Calibration gas piping and cylinder regulators ..................................................8
5.4 Calibration procedure ......................................................................9
5.4.1 “High” point calibration .................................................................9
5.4.2 “Low” point calibration..................................................................9
5.5 Maintenance ..............................................................................9
6 SPARES AND REPAIRS..............................................................10
7 TECHNICAL DESCRIPTION OF SENSOR ...............................................11
8 COMMUNICATION PROTOCOL.......................................................12
Table 1 - common groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13/14
Table 2 - error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

iv INM MTL 130-0193 Rev 5
THIS PAGE IS LEFT INTENTIONALLY BLANK

INM MTL 130-0193 Rev 5 1
1 INTRODUCTION
The Z530 is a ‘blind’ (no display) OEM oxygen analyser comprising micro-processor based
electronics mounted on a single printed circuit board, and a separate zirconia oxygen sensor,
complete with its associated heater. Both parts are supplied loose (un-mounted) to enable the
maximum flexibility in mounting options for the OEM. The mounting dimensions are shown
later in this manual.
This product is sold as a component. All relevant standards applicable to the installation is the
responsibility of the system integrator.
See specification section for full details.
1.1 Manual symbols
The following methods are used in this manual to alert the user to important information:-
WARNING
Warnings are provided to ensure operator safety and MUST be followed.
CAUTION
A Caution is provided to prevent damage to the instrument.
NOTE
These are used to give general information to ensure correct operation
1.2 Information
Waste Electrical and Electronic Equipment directive (WEEE) 2002/96/EC
(RoHS) directive 2002/95/EC
WARNING
This equipment must only be used in accordance with the manufacturer’s
specification, instructions for installation, use and maintenance to ensure
that the protection of the operator is not impaired. It is the responsibility
of the installer to ensure the safety and EMC compliance of any particular
installation.

2INM MTL 130-0193 Rev 5
2 SPECIFICATION
2.1 Sensor
Zirconia- platinum-coated electrolyte
2.2 Range
0.000001% (0.01ppm)...100% Oxygen
2.3 Accuracy
100ppm to 25% ±2% of reading or better
10- 99ppm ±1ppm
0 - 9.9ppm ±0.1ppm
2.4 Stability
Better than 2% of reading or 0.5ppm/month, whichever is greater.
2.5 Speed of response
T90: less than 4 seconds at 500ml/min sample flow – see graph for details.
2.6 Sample flow
Between 100 and 500 ml/min for optimum operation.
Note: Flow regulation and measurement is not provided as standard; it is the responsibility of
the installer to provide these as required.
2.7 Sample connections
Inlet/Outlet connectors 3.125mm (1/8”) diameter stainless steel tubes
2.8 Sample inlet pressure
The pressure within the sensor is set by the back pressure at the sample outlet tube;
this should be nominally atmospheric. The limits are-1 barg to +1.5 barg. See technical
description section regarding errors if pressures, other than atmospheric, are applied.
The sample is heated to ~650°C in the sensor; only samples that contain non-reactive,
non-corrosive gases can be applied – e.g. oxygen in nitrogen, inert gases (Group 0), carbon
dioxide etc.
2.9 Sampling system material
Stainless steel, platinum, zirconia and nickel plated brass.
0
5
10
01 2345
6
15
20
25
Seconds
%
O2
Response Curves for Z530 Analogue Output
Air to 1%
1%to Air
T90
T90

INM MTL 130-0193 Rev 5 3
2.10 Analogue output - isolated
Output (programmable): † 4 to 20mA 0 to 5 volts
Isolation: 1kV * 1kV *
Maximum load: 500 ohms –
Minimum load: –10 kohms
Resolution: 0.01 mA 2.5 mV
Accuracy: +/- 0.2% of programmed range +/- 0.2% of programmed range
Linearity: +/- 0.5% +/- 0.5%
Minimum under range: 3.8 mA –
Maximum over range: 20.5 mA –
Upper error band: 21.0 to 24.0 mA –
† This is user programmable for full-scale values of between 1ppm and 100% oxygen and
zero-scale values of between 0ppm and 90%.
* Isolation must only be considered as forming basic or function insulation as defined in
BS EN 61010-1:2010
2.11 Serial communications
RS232 interface, 9600 baud, ASCII protocol (see Section 8)
2.12 Ambient operating temperature range (sensor and circuit board)
0°C to 45°C (0- 90% R.H. non-condensing)
2.13 Power requirements
24V DC +/- 10%, 24W
2.14 Dimensions
Electronic circuit board
Maximum overall: 20mm max (H), 165mm (L), 100mm (W)
Sensor/heater
Maximum overall: 68mm (H) x 150mm (L) x 55mm (W)
Lead lengths: 300mm nominal
2.15 Weight
Electronics: 75gms
Sensor: 130gms

4INM MTL 130-0193 Rev 5
3 INSTALLATION
3.1 Unpacking and visual checking
Take all normal precautions when opening packages. In particular, avoid the use of long
bladed cutters. Check that parts are present as listed on packing note.
Search packing if any are missing.
3.2 Mounting
WARNING
The sensor heater has a hot surface that is present in normal operation. Take
care when handling!
A site should be chosen where the temperature does not go outside the range specified in
Section 2.12. Care should be taken to ensure that neither the electronics nor the sensor will
be subjected to excessive vibration or knocks and jolts. The unit is not sensitive to tilting in
any attitude. See Fig.1 for electronics dimensions and Fig. 2 for sensor/heater assembly.
Figure 1 - Z530 circuit board
The sensor/heater assembly is shipped fully assembled. To mount it as shown in Fig. 2 the
two screws attaching the sensor bracket to the end plate of the heater body, and the two
screws in the upper holes must be removed. The sensor and bracket assembly must then be
carefully removed. The heater and sensor assembly must then be re-assembled through the
pre-drilled mounting plate as shown.
3.3 Electrical connections
3.3.1 Power supply
Power connections should be made to the circuit board as defined in Section 3.4. The power
demand is approximately 24VDC 1A (max.) at turn on.

INM MTL 130-0193 Rev 5 5
3.3.2 Circuit board electrical connections
1 + 4 to 20mA analogue output
2 – 4 to 20mA analogue output
3N/C
4 + Sensor Input - Red
5 – Sensor Input - Black
6 + Thermocouple Input - Green
7 – Thermocouple Input - White
8 Heater Element - Orange
9 Heater Element - Orange
10 RX - RS232
11 TX - RS232
12 0V Comms
13 +24V Power
14 0V Power
15-20 N/C
NOTE
The sensor/heater assembly and the electronics are factory calibrated as a matched
pair. Should they become separated, pairs can be identified by the sensor serial number
marked on each one. If the sensor or the electronics are exchanged, re-calibration
will be required.
Hole through
mounting plate 25Ø
28mm
28mm
Mounting plate
maximum thickness 2mm
4 off M2.5 screws
Insulating bush
Insulating washer
60mm
50mm
Figure 2- Sensor and Heater Assembly

6INM MTL 130-0193 Rev 5
3.3.3 RS232 Connection
Connect the serial RS232 interface to DTE equipment (e.g PC COM port) as shown here.
See also Section 8 - COMMUNICATION PROTOCOL
Circuit board DTE (PC) pin no.
Conn. Signal Description 25-way 9-way
10 RX Data received by instrument 2 3
11 TX Data transmitted from instrument 3 2
12 GND Signal gnd 7 5
3.4 Sample connections
The sensor connections are 1/8” OD sample tubing.
The sample must be clean, non-condensing and non-corrosive.
It is advisable to fit isolation valves in the sample line to the zirconia sensor. This ensures that
the process may be sealed when the sensor is changed or removed. The use of a three way
valve on the inlet side of the sensor is also useful to allow standard calibration gases to be
introduced.
For best accuracy the instrument should be calibrated at its normal working pressure, but the
measuring cell may be pressurised to the maximum pressure specified in Section 2.10. It is
factory calibrated at normal atmospheric pressure.

INM MTL 130-0193 Rev 5 7
4 COMMISIONING
4.1 Applying power
With the analyser fully connected it may be switched on. The cell heater will begin to warm up.
During this time the instrument heater status will show ‘Warm-up’ (via the RS232 communications)
and the concentration reading will make high and low excursions. Once the correct temperature is
reached, the instrument heater status will show ‘Normal’. Allow a further 15 minutes before relying
on the oxygen reading. The instrument is calibrated prior to shipment and may be used immediately
the warm-up time has elapsed. If, however, you wish to check calibration go to section 5.
4.2 Configuration
All configuration of the instrument is via the RS232 communications. This utilises an ASCII protocol
as specified in Section 8.0. Use the Configure command to set the analogue concentration range
and calibrate the instrument.
4.3 Introducing the sample
To measure a flowing sample, establish a flow rate as specified in Section 2.6. The instrument
should respond immediately once the instrument heater status is normal. For best results the
sample exhaust gas should be vented directly to the atmosphere.

8INM MTL 130-0193 Rev 5
5 MAINTENANCE AND CALIBRATION CHECKS
CAUTION
Certain procedures associated with calibration maintenance can affect the output of the
instrument. Any procedures used for control, or the associated control loop should be
disabled before commencing calibration.
5.1 Calibration overview
The Z530 is a very stable analyser with minimal drift (see Section 2.4). The frequency of
calibration checks or verifications depends upon the quality regime being operated at the
installation site. Typically, monthly checks are found to be adequate.
The recommended calibration technique starts by checking or verifying the response of the
analyser, then altering the calibration of the analyser only if the errors are significant. The
readings may be verified by introducing a gas mixture of known concentration (i.e. a calibration
gas), allowing the system to stabilise, then checking that the reading is correct.
A full calibration requires the use of two standard gases to establish two points, equivalent
to ‘zero’ and ‘span’. (A new user will find probably find it useful to read section 7, to obtain a
technical description of the sensor and how it works).
The gas calibration points are referred to as “high” and “low”. Air is frequently used as the
“high” gas, while the “low” gas should ideally have approximately the same sort of oxygen
concentration that is encountered in a ‘normal’ sample.
As with most instruments of this type it is important to have a reasonable difference between
the two concentration calibration points - H and L. For the Z530 the recommended difference
is around 0.25 decade; i.e. log (H/L) > ±0.25. Because the most common “high” level gas is
air, and in order to maintain an adequate difference in concentration, the instrument will not
accept a “low” level calibration gas with a concentration greater than 10%.
5.2 Calibration gases
Because the sensor operates at high temperature, the calibration gases must not contain
any flammable or reactive components. Typically this means using mixtures of oxygen
with nitrogen, argon or helium; nitrogen is by far the cheapest and most obtainable. If the
calibration gases used contain ppm levels of oxygen then take note of the requirements
detailed below when measuring ppm gas mixtures.
5.3 Calibration gas piping and cylinder regulators
All piping should be of good quality material with sound joints and couplings.
If concentrations are being measured in ppm units, then the piping chosen must be of hard
plastic or metal. Suitable plastics are Nylon 6 and rigid P.V.C., while P.T.F.E. and flexible P.V.C.
are not regarded as suitable. Cylinder pressure regulators and gauges should also be chosen
carefully. Chose regulators that have a metal diaphragm and pressure gauges that have low
volume. These measures avoid contamination and the problem of cavities containing air/
oxygen, which can take several hours to purge.

INM MTL 130-0193 Rev 5 9
5.4 Calibration procedure
NOTE
Calibration limits are set in the software to prevent the user from calibrating the instrument
outside of the sensor’s operational range. If, on pressing the Cal button, the reading
returns to the original value, the calibration has been rejected, and a change of cell is
recommended. Return the instrument to Eaton, as discussed in Section 6.
5.4.1 “High” point calibration
Expose the process side of the cell to air at normal ambient pressure. When the reading has
stabilised, use the RS232 protocol (see section 8.0) to enter the expected high calibration
reading.
Example:
For Air Calibration send “A0C2=20.9” This will calibrate the current reading to 20.9%
This command recalculates the cell offset.
5.4.2 “Low” point calibration
Change the sample gas supply to the “Low” level concentration and establish a flow of the gas
through the analyser. When the reading has stabilised, use the RS232 protocol (see section
8.0) to enter the expected low calibration reading.
Example:
1% O2Calibration send “A0C1=1.00” This will calibrate the current reading to 1.00%
This command recalculates the cell gain (K).
5.5 Maintenance
Calibration is the only routine operation that is necessary on a regular basis. However, the
response time of the measuring cell will gradually lengthen with use. When the “Air to 1%”
response time reaches 10 seconds, or more, a change of cell is recommended. The instrument
should be returned to your local MTL Gas sales office to enable a replacement to be fitted.

10 INM MTL 130-0193 Rev 5
6 SPARES AND REPAIRS
Should any failure occur, the instrument should be returned to your local MTL Gas sales office
for repair. When ordering spare parts or raising queries on the instrument, it is important that
the serial number is quoted. This will be found on the data label attached to the circuit board,
as shown here.
MTL Gas Products
 
Serial No: I-04810 Original Cell S/N: 4481
Gas & Range: O2 1ppm to 100%
Analogue Output: Programmable
Build Code: 806-9401 / 2
Power Supply: 24V dc

INM MTL 130-0193 Rev 5 11
7 TECHNICAL DESCRIPTION OF SENSOR
The MTL zirconia oxygen sensor (see sketch below) is an impervious tube-shaped zirconia
(zirconium oxide) element with a closed end coated externally and internally with porous
metal electrodes, typically platinum. At high temperatures, typically above 400°C, the
zirconia becomes an oxygen ion conductor, which results in a voltage being generated
between the electrodes dependent upon the differences between the partial pressures
of the oxygen in the sample and the oxygen in a reference gas (generally air). The voltage
generated is determined by the Nernst equation:-
Cell output = 2.303RT log P1
4F P2
where:-
R = molar gas constant
T = absolute temperature of cell in °K
F = Faraday constant
P1 = partial pressure of oxygen in the
reference (air in most cases)
P2 = partial pressure of oxygen in the sample.
Thus, with air on both sides of the cell, the output is zero (log1=0).
The reference electrode is negative with respect to the sample electrode for sample
concentrations of oxygen higher than that of air and positive for concentrations less than that
of air. Depending on the application either the internal or external electrode is used as the
reference.
The output voltage is processed electronically to provide signals suitable for display or for
process control purposes.
Cell output
(typically 45mV/decade
Zirconia tube
Electrodes
pO2 = P2 pO2 = P1


12 INM MTL 130-0193 Rev 5
8 COMMUNICATION PROTOCOL
Communication parameters are 9600 Baud, 8 bits, no parity, 1 stop bit and no handshaking.
The instrument is DTE. The general form of the protocol is:
1. The protocol is a single command-and-response protocol. Multiple commands cannot
be sent without waiting for a response.
2. A command consists of an “address” and an “action”. A command with a valid
address will always receive a response even if the action is invalid.
3. A Response consists of a “tag” and “data”.
4. A command message can not be more than 30 characters without a message
terminator (<CR><LF>). Exceeding this length will result in an error “? 90” response.
5. A response message can not be more than 30 characters without a message
terminator (<CR><LF>). Exceeding this length will be assumed to be a
communications error.
6. A command message timeout is defined as 10 seconds. This is the maximum time
permitted between a valid address “Ax” and the message terminator (<CR><LF>).
This time is long to permit keypad entry (e.g. with HyperTerminal).
7. The response message “failure to respond” timeout is defined as 300 milliseconds.
This is the maximum time from a valid command message terminator (<CR><LF>)
until the first character of the response.
8. A response message line maximum duration is defined as 1 second. This is the
maximum time from the first valid response character to the line message terminator
(<CR><LF>).
9. A response message maximum duration is defined as 3 second. This is the maximum
time from the first valid response character to the last message terminator
(<CR><LF>). This is to allow multiple line responses. No card response can hold the
bus for more than 3 seconds. Factory commands are the only exception.
10. Exceptions to items 7, 8 and 9 above.
a) Starting up: The card start up is defined as taking up to 10 seconds. The card will
then assert an error “? 97” in R1, R4 and R5 on the first reading after the 10 second
period. Subsequent readings will show the correct values.
b) Calibration obtains exemption from item 7 and 8 but must comply with item 9.
The general form of the response is:
1. Read whole group: ‘AxP0’ where x is the network address of the unit. The unit will
respond when x is its own address or 0 (any unit responds to address 0), otherwise it
will not respond at all. If the No Zero Param bit in sysflags is set, ‘AxP’ OR ‘AxP0’ to
send all.
2. Read specific group item: ‘AxPy’ where y is the line (or item) number.
3. Write specific group item: ‘AxPy=<new value>. The format and (where appropriate)
precision of the new value is as it is displayed. With the ‘verbose’ flag cleared:
Py itemname=value unit.
4. With the ‘verbose’ flag set: Py =value.
5. A read command will return 0 when it has no value to report (e.g. A0E6 returns A0E6=0).
6. A ‘do now’ write command (e.g. clear logs ‘E6’) will do nothing if set with a 0 as
argument, will execute with a 1 as an argument and will ?93 any other argument. A ‘do
now’ write command returns 0 for fail and 1 for success. E.g. A0E6=1 returns A0E6=1.

INM MTL 130-0193 Rev 5 13
Send Function Reply (verbose) Reply (terse) Limits (where applicable) Notes AxCy Calibration C9 Load def=0
C8 Sens 2 os=0.00 C7 Sens 2 K=1 C6 Sens 2 H cal =100% C5 Sens 2 L cal=0% C4 Sens 1 os=0.00 C3 Sens 1 K=45.0 C2 Sens 1 H cal =100% C1 Sens 1 L cal=0%
C9=0 C8 =0.00 C7 =45.0 C6 =0 C5 =100 C4 =0.00 C3 =45.0 C2 =0 C1 =100
0 or 1 Set in I3 (6dp) Set in I1,2 (4dp) Zr limits Zr limits
Load defaults N/A N/A N/A N/A Cell offset. Cell slope. Calibrate high. Calibrate low.
Note:- Sending AxC1=xxx calibrates to xxx, and AxC1 RETURNS the last C1 cal value, but changes nothing. AxC9=1 makes the instrument load HARD CODED DEFAULTS. User will be asked to type ‘y’ to confirm, or load will be abandoned. AxDy Data
(read only)
D6 ADC 3 = 12345cts D5 ADC 2 = 12345cts D4 ADC 1 = 12345cts D3 Sens 3 = N/A D2 Sens 2 = 11.56mV D1 Sens 1 = 11.55mV
D6 = 12345 D5 = 12345 D4 = 12345 D3 =0 D2 =11.56 D1 =11.55
0 to 16777216 0 to 16777216 0 to 16777216
ADC raw counts ADC raw counts ADC raw counts N/A Thermocouple mV Oxygen cell mV
AxEy Error logs
(read only except E9)
E9 Clear Log=0 E8 Calibration=0 E7 Sensor=0 E6 AO=0 E5 Float=0 E4 CRC=0 E3 Other=0 E2 Last=0 E1 Current=0
E9=0 E8=0 E7=0 E6=0 E5 =0 E4 =0 E3 =0 E2 =0 E1 =0
1 to clear logs 0 to 65353 0 to 65353 0 to 65353 0 to 65353 0 to 65353 0 to 65353 0 to 99 0 to 99
Clear all counters Calibration error counter Sensors error counter Analogue output counter Float error counter EEPROM CRC error counter Other error counter Last error code Current error code
AxIy Input
(Read only)
I17 R3 SP=N\A I16 R2 BG=N/A I15 R2 SP=N/A I14 R2 MMW comp=1 I13 R2 RangeT =100 I12 R2 RangeB =0 I11 R2 Os Range=0 I10 R2 K Range=1 I9 R2 Base K =-4.7 I8 R1 BG=N2 I7 R1 SP=O2 I6 R1 MMW comp=1.00 I5 R1 RangeT =100
I17 =N\A I16 =N/A I15 =N/A I14 =1 I13 =100 I12 =0 I11 =0 I10=0 I9=1 I8 =N2 I7 =O2 I6 =1.000 I5 = 100
0 to 10 8 ascii characters or 0 to 10 8 ascii characters or 0 to 10 0.10 to 5 (2dp) Instrument range and resolution Instrument range and resolution +/-1000 (6dp) +/-100 (2dp) +/-100 (4dp) 8 ascii characters or 0 to 10 8 ascii characters or 0 to 10 0.10 to 5 (2dp) Instrument range and resolution
Table 1 - common groups
continued

14 INM MTL 130-0193 Rev 5
Send Function Reply (verbose) Reply (terse) Limits Notes
I4 R1 RangeB =0 I3 R1 Os Range=0.01 I2 R1 K Range=1 I1 R1 Base K =-4.7
I4 = 0 I3 =0.01 I2 =1 I1 =-4.7
Instrument range and resolution +/-1000 (6dp) +/-100 (2dp) +/-100 (4dp)
AxPy Parameters. P9Terse=0
P8 A2 Mode=1 P7 A2 Hyst=1.0% P6 A2 Level=5.0% P5 A1 Mode=1 P4 A1 Hyst=1.0% P3 A1 Level=5.0% P2 4mA=0% P1 20mA=50%
P9=1 P8 =1 P7 =1.0 P6 =5.0 P5 =1 P4 =1.0 P3 =5.0 P2 =0 P1 =50
0 or 1 0 to 3 1 to 10 (1dp) 0 to 100 As alarm 2 As alarm 2 As alarm 2 0 to 100
1 to set instrument into terse mode – 0 to set verbose 0, 1, 2, 3 in terse - Off, High, Low, status in verbose Alarm hysteresis Alarm trip point As alarm 2 As alarm 2 As alarm 2 Will show 0V or 4mA depending on variant. Zero and FSD limits are interactive.
AxRy Reading
* see (8) below
R5 Comp2=N/A R4Temp=Normal R3 Alarm2=Normal R2 Alarm1=Normal R1 Conc=5.00%
R5 =0 R4 =1 R3 =0 R2 =0 R1 =5.00
0 to 2 0 to 2 Instrument range and resolution
Heater state – see also heater errors. Alarm state – Off, Normal, ALARM or N/A (if not fitted) In terse mode alarm state is 1 in alarm and 0 for all other states Measurand Concentration
Notes on readings:- In over-range condition (110% of instrument span) xxxxx will be ‘+++++’ (e.g. ‘R1 Conc= +++++’). Similarly in under-range condition (-5% of instrument span) xxxxx will be ‘-----’. In the case of a system error R1 will be replaced by the error code e.g. ? 72 In verbose mode a brief fault description will be appended. ‘Conc’ & ‘%’ are determined by sensor type and unit – see ‘U’ below. Resolution is application dependant. Where a fault is present in the secondary reading it will be indicated by a text description in verbose mode and by a code in the case of Zr units (heater does not return a numeric value in R4) or by-999 or +999 to indicate downscale or upscale failures respectively. AxUy Unit
(read only)
U13Test Flags=0 U12 Factory Flags=0 U11 Output=mA* U10 Sens 2 Ch=1 U9 R2 unit=mV U8 R2 type=T/C U7 R1 Ch=1 U6 R1 unit=% U5 R1 type=Z U4 F/w rev=0.24 U3 F/w p/n=290-6031 U2 S/n = I-700123 U1 Addr=0
U13=0 U12=0 U11=1 U10=1 U9=2 U8 =14 U7 =1 U6 =1 U5 =13 U4 =0.24 U3 =290-6031 U2=I-700123 U1 =0
0 to 65,535 0 to 65,535 0 to 2 0 to 3 0 to 255 0 to 99 0 to 3 0 to 255 0 to 99 8 ascii characters 0 to 9
See table below for details See table below for details Analogue output: 0=4/20mA, 1= 0/1V, 2 = 0/5V, 3=0/20mA Sens 2 ADC chan (9) See table for unit definitions See table for Sensor 2 types (8) Sens 1 ADC chan (9) See table for unit definitions See table for Sensor 1 types (8) Sensor Card Address
Table 1 - common groups (continued)

INM MTL 130-0193 Rev 5 15
Error messages Error messages take the form ‘? xx’ where ‘xx’ is a numeric code as explained below.
Code Error Description
90 Buffer overflow More than 30 characters were received without message terminator (<CR><LF>). Any subsequent characters will begin a new message.
91 Timeout 10 seconds has elapsed since the last character was received without message terminator.
92 Bad opcode Message was received correctly terminated but not understood (e.g. ‘A0Q1<CR><LF>’ )
93 Bad operand Message was received correctly terminated and understood but the argument was malformed or out of bounds (e.g. ‘A0C2=999.9<CR><LF>’).
94 Read only An attempt was made to write to a read-only parameter (e.g. ‘A0R1=1.2<CR><LF>’).
97 Initialising Sensor card is initialising asserted for 10 seconds after a reset or cold start 51-69 Configuration
errors
51 Primary cell illegal for this board, 52 Secondary cell illegal for this board,
71-79 CRC error
(NVRAM errors)
Error 71- user parameters CRC error. if this area is restored user calibration etc is LOST. Error 71 will be reported in response to ANY read request until either a calibration is performed or the instrument rebooted. Error 73 & 75 automatically clear themselves so will not be seen. Errors 72, 74 & 76 will be reported in response to any read request and cannot be cleared.
Specific errors
Code Error Description
21-22 Calibration errors
(20 is OK)
21 K out of bounds during R1 low calibration 22 offset out of bounds during R1 low calibration
Sensor specific errors – report via the reading group (ie R1, R4 or R5)
Code Error Description 81 O/C Sensor open circuit 82 S/C Sensor short circuit 83 Reversed Sensor reversed 84 Not Normal Sensor behaving erratically (HeaterTimed Out) 85 Not responding Drive to sensor on but shows low reading 86 Out of control Drive to sensor off but shows high reading
Table 2 - Error messages

DRAFT- 27 November 2014
AUSTRALIA
MTL Instruments Pty Ltd,
10 Kent Road, Mascot, New South Wales, 2020, Australia
Tel: [phone] Fax: [phone]
E-mail: [email protected]
BeNeLux
MTL Instruments BV
Ambacht 6, 5301 KW Zaltbommel
The Netherlands
Tel: [phone] Fax: [phone]
E-mail: [email protected]
CHINA
Cooper Electric (Shanghai) Co. Ltd
955 Shengli Road, Heqing Industrial Park
Pudong New Area, Shanghai 201201
Tel: [phone] Fax: [phone]
E-mail: [email protected]
FRANCE
MTL Instruments sarl,
7 rue des Rosiéristes, 69410 Champagne au Mont d’Or
France
Tel: [phone] Fax: [phone]
E-mail: [email protected]
GERMANY
MTL Instruments GmbH,
Heinrich-Hertz-Str. 12, 50170 Kerpen, Germany
Tel: [phone] Fax: [phone]
E-mail: [email protected]
INDIA
MTL India,
No.36, Nehru Street, Off Old Mahabalipuram Road
Sholinganallur, Chennai- 600 119, India
Tel: [phone] Fax: [phone]
E-mail: [email protected]
ITALY
MTL Italia srl,
Via San Bovio, 3, 20090 Segrate, Milano, Italy
Tel: [phone] Fax: [phone]
E-mail: [email protected]
JAPAN
Cooper Crouse-Hinds Japan KK,
MT Building 3F, 2-7-5 Shiba Daimon, Minato-ku,
Tokyo, Japan 105-0012
Tel: [phone] Fax: [phone]
E-mail: [email protected]
NORWAY
Norex AS
Fekjan 7c, Postboks 147,
N-1378 Nesbru, Norway
Tel: [phone] Fax: [phone]
E-mail: [email protected]
RUSSIA
Cooper Industries Russia LLC
Elektrozavodskaya Str 33
Building 4
Moscow 107076, Russia
Tel: [phone] Fax: [phone]
E-mail: [email protected]
SINGAPORE
Cooper Crouse-Hinds Pte Ltd
No 2 Serangoon North Avenue 5, #06-01 Fu Yu Building
Singapore 554911
Tel: [phone] Fax: [phone]
E-mail: [email protected]
SOUTH KOREA
Cooper Crouse-Hinds Korea
7F. Parkland Building 237-11 Nonhyun-dong Gangnam-gu,
Seoul 135-546, South Korea.
Tel: [phone] Fax: [phone]
E-mail: [email protected]
UNITED ARAB EMIRATES
Cooper Industries/Eaton Corporation
Office 205/206, 2nd Floor SJ Towers, off. Old Airport Road,
Abu Dhabi, United Arab Emirates
Tel: [phone] Fax: [phone]
E-mail: [email protected]
UNITED KINGDOM
Eaton Electric Limited,
Great Marlings, Butterfield, Luton
Beds LU2 8DL
Tel: [phone] Fax: [phone]
E-mail: [email protected]
AMERICAS
Cooper Crouse-Hinds MTL Inc.
3413 N. Sam Houston Parkway W.
Suite 200, Houston TX 77086, USA
Tel: [phone] Fax: [phone]
E-mail: [email protected]
The given data is only intended as a product
description and should not be regarded as a legal
warranty of properties or guarantee. In the interest
of further technical developments, we reserve the
right to make design changes.
EUROPE (EMEA):
[phone]
[email protected]
THE AMERICAS:
[phone]
[email protected]
ASIA-PACIFIC:
[phone] / 9865
[email protected]
Eaton Electric Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
E-mail: [email protected]
www.mtl-inst.com
© 2017 Eaton
All Rights Reserved
Publication No. INM MTL 130-0193 Rev 5 230117
January 2017