Hach si792 T User manual

DOC026.52.00796
si792(x) E—Hach GLI 3700 series
si792(x) T—7MA2200 and 8398 series
Inductive Conductivity
2-Wire Transmitter
USER MANUAL
December 2007, Edition 1
© HACH Company, 2007. All rights reserved. Printed in Germany

1
Table of Contents
Section 1 Specifications ......................................................... 5
Section 2 General information ........................................... 11
2.1 Safety information .................................................................... 11
2.1.1 Use of hazard information ................................................. 11
2.1.2 Precautionary labels.......................................................... 11
2.2 General product information..................................................... 13
2.2.1 Product overview............................................................... 13
2.2.2 FDA 21 CFR part 11 compliance (HART only) ................. 14
2.2.2.1 Electronic signatures for si792(x) E/T transmitters ....14
2.2.2.2 Audit trail for si792(x) E/T transmitters.......................14
Section 3 Installation .............................................................. 15
3.1 Hazardous location installation................................................. 16
3.1.1 ATEX safety information ................................................... 16
3.2 Unpacking the transmitter ........................................................17
3.3 Mechanical installation ............................................................. 18
3.3.1 Transmitter assembly ........................................................ 18
3.3.2 Mounting ........................................................................... 18
3.3.2.1 Wall mount ................................................................. 18
3.3.2.2 Panel or pipe mount (optional) ................................... 18
3.4 Wiring Safety Information......................................................... 20
3.5 Electrical installation................................................................. 21
3.5.1 Wire preparation................................................................ 21
3.5.2 Power and communication connections............................ 23
3.5.2.1 si792(x) E/T (4-20 mA/HART) wiring.......................... 24
3.5.2.2 si792x E/T-FF and si792x E/T-PA wiring ................... 25
3.5.3 Sensor wire connections ................................................... 25
3.5.3.1 Hach GLI 3700 series sensor wiring—si792(x) E ...... 26
3.5.3.2 7MA2200 series sensor wiring—si792(x) T ............... 27
3.5.3.3 8398 series sensor wiring—si792(x) T....................... 28
3.6 HART communication connection ............................................ 29

Table of Contents
2
Section 4 Interface and navigation ..................................31
4.1 si792(x) E/T (4–20 mA/HART) interface...................................31
4.2 si792x E/T-FF and si792x E/T-PA interface .............................32
4.3 Display......................................................................................33
Section 5 Operation—4–20 mA/HART............................35
5.1 Measure mode ......................................................................... 35
5.2 Configuration ............................................................................ 35
5.2.1 Current output configuration..............................................36
5.2.1.1 Time constant of output filter......................................39
5.2.1.2 Output signal during errors.........................................39
5.2.1.3 Output signal during HOLD ........................................ 40
5.2.2 Temperature compensation configuration.........................41
5.2.3 Alarm settings....................................................................42
Section 6 Operation—Foundation Fieldbus................43
6.1 Configuration ............................................................................ 43
6.1.1 Configuration steps ...........................................................43
6.1.2 Configuration menu........................................................... 44
6.2 Foundation Fieldbus communication........................................47
6.2.1 Standard resource block (RB)...........................................47
6.2.2 Standard analog input block (AI).......................................50
6.2.2.1 Operating modes........................................................50
6.2.2.2 Set the parameter and units.......................................50
6.2.2.3 Data processing ......................................................... 51
6.2.2.4 Alarms ........................................................................ 51
6.2.2.5 Bus parameters for the analog input block.................52
6.2.2.6 Cyclic measured value status.....................................55
6.2.2.7 Measured value limits—limit bits................................55
6.2.3 Transducer block...............................................................56
6.2.4 Calibration via Foundation Fieldbus..................................63
Section 7 Operation—Profibus PA................................... 65
7.1 Configuration ............................................................................ 65
7.1.1 Configuration steps ...........................................................65

Table of Contents
3
7.1.2 Configuration menu........................................................... 66
7.2 Profibus PA communication ..................................................... 67
Section 8 Calibration .............................................................. 71
8.1 Calibration ................................................................................ 71
8.1.1 Enter cell constant............................................................. 72
8.1.2 Calibration with a calibration solution................................73
8.1.3 Calibration by comparison/grab sample............................74
8.1.4 Zero calibration—air.......................................................... 75
8.1.5 Zero calibration—calibration solution ................................ 75
8.2 Temperature sensor adjustment .............................................. 76
Section 9 Maintenance........................................................... 77
9.1 Cleaning the instrument ........................................................... 77
9.2 Sensor maintenance ................................................................ 77
Section 10 Troubleshooting ................................................ 79
10.1 Sensoface .............................................................................. 79
10.2 Sensocheck............................................................................ 79
10.3 Error codes............................................................................. 80
10.4 Diagnostic tests ...................................................................... 82
Section 11 Replacement parts............................................ 85
11.1 si792 transmitter versions ...................................................... 85
11.2 Accessories ............................................................................ 85
11.3 Replacement parts ................................................................. 85
Section 12 Contact information......................................... 87
Section 13 Limited warranty ............................................... 90
Appendix A Calibration solutions .................................... 93
Appendix B Concentration curves................................... 97
B.1 Concentration measurement ranges........................................ 97
B.2 Sodium chloride solution -01- NaCl ......................................... 99
B.3 Hydrochloric acid -02- HCl..................................................... 100
B.4 Sodium hydroxide solution -03- NaOH .................................. 101
B.5 Sulfuric acid -04- H2SO4. ....................................................... 102

Table of Contents
4
B.6 Nitric acid -05- HNO3. ............................................................103
Appendix C Passcode editor ............................................105
Appendix D ATEX safety instructions..........................107
Index...............................................................................................111

5
Section 1 Specifications
Specifications are subject to change without notice.
Transmitter
Composition PBT (polybutylene terephthalate)
Display LCD
Fittings
3 knockouts for M20 x 1.5 strain reliefs
2 knockouts for ½ inch NPT or rigid
metallic conduit
Power requirements—HART 14–30 VDC (30 VDC maximum)
Power requirements—FF and Profibus
PA
FISCO bus supply: 9 to 17.5 VDC
Linear barrier: 9 to 24 VDC
Loop current—HART 4–20 mA floating;
3.80–22.00 mA specifiable
Current consumption—FF and Profibus
PA <13.2mA
Maximum current in case of fault
(FDE)—FF and Profibus PA <17.6mA
Measurement error2<0.3% of current value + 0.05 mA

Specifications
6
Certification (may not apply to all
sensors. Refer to the control drawing or
listing for certification information for
the sensor that is used).
US:
si792 E/T
FM Listed for:
Class I, Division 2
si792x E/T; si792x E/T-FF;
si792x E/T-PA
FM Listed for:
Class I, Division 1, Groups A, B, C, D
Class II, Division 1, Groups E, F
Class III, Division 1
Class I, Zone 0, AEx ia, Group IIC T4
Enclosure: Type 2
Canada:
si792 E/T
CSA Certified to:
Class I, Division 2
si792x E/T CSA Certified and
si792x E/T-FF; si792x E/T-PA
cFMus Certified to:
Class I, Division 1, Groups A, B, C, D
Class I, Division 2, Groups A, B, C, D
Sensor: Class I, Zone 0, Group IIC
Transmitter: Class I, Zone 1, Group IIC
Enclosure: Type 2
EU:
si792x E/T; si792x E/T-FF;
si792x E/T-PA:
CE Marked to:
EMC Directive 2004/108/EC
ATEX Directive 94/9/EC
ATEX: II 2 (1) G EEx ib (ia) IIC T6
Enclosure: IP65
Output averaging time constant (HART) 0–120 seconds
Storage temperature –20 to 70 °C (–4 to 158 °F)
Operating temperature –20 to 55 °C (–4 to 131 °F)
Weight Approximately 1 kg

Specifications
7
Data retention Parameters and calibration data
> 10 years (EEPROM)
Passcodes
Modifiable according to FDA 21 CFR
Part 11 “Electronic Signatures”
(HART only)
Sensocheck
Monitoring of primary coil and its lines
for short circuit and of secondary and
its lines for open circuit
Sensor monitor
Direct display of measured values from
sensor for validation (resistance/
temperature)
Communication
HART communication
Digital communication by FSK
modulation of loop current, reading of
device identification, measured values,
status and messages, reading and
writing of parameters, start of product
calibration, signaling of configuration
changes according to FDA 21 CFR
Part 11.
Foundation Fieldbus (FF_H1)
Bus-powered device with constant
current consumption. Cyclic and acyclic
data exchange. 1 resource block,
1 transducer block, 3 analog input
function blocks (switchable:
conductivity, concentration, salinity,
temperature, cell constant)
Execution time: 50 ms
Certified to ITK 4.6
Physical interface: to IEC 1158-2
Address range: 017 to 246

Specifications
8
Profibus-PA (DPV1)
Bus-powered device with constant
current consumption. Cyclic and acyclic
data exchange. Physical block,
2 analog input function blocks,
2 discrete input blocks, logbook block,
alarm block.
PNO directive: PROFIBUS-PA,
Profile for Process Control Devices,
Version 3.0
Physical interface: MBP-IS
(Manchester Bus Powered-Intrinsically
Safe) to IEC 1158-2 (DIN-EN 61158-2)
Connection: via segment coupler to
SPC, PC, PCS
Address range: 1 to 126
Conductivity input
Electrodeless conductivity sensors,
ranges
7MA2200 series
8398 series
Hach 3700 series
Conductivity 0.00–1999 mS/cm
Concentration 0–100% by weight
Salinity 0.0–45 ‰ (0–35 °C)
Range, conductivity
0.000–9.999 mS/cm
00.00–99.99 mS/cm
000.0–999.9 mS/cm
0–1999 mS/m
0.000–9.999 S/m
00.00–99.99 S/m
Range, concentration 0.00–100.0% by weight
Range, salinity 0.0–45 ‰ (0–35 °C)
Measurement error < 1% measured value + 0.02 mS/cm
Temperature input
Sensor Pt100/PT1000/NTC 30 kΩ/NTC 100 kΩ
2-wire connection