Specifications; General Information; Safety Information; Use Of Hazard Information - Hach Sigma 950 Manuel D'utilisation De Base

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Specification
Data logging
Sampler output
Communications
Certification

General information

In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential
damages resulting from any defect or omission in this manual. The manufacturer reserves the right to
make changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer's website.

Safety information

The manufacturer is not responsible for any damages due to misapplication or misuse of this product including,
without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent
permitted under applicable law. The user is solely responsible to identify critical application risks and install
appropriate mechanisms to protect processes during a possible equipment malfunction.
Please read this entire manual before unpacking, setting up or operating this equipment. Pay
attention to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
Make sure that the protection provided by this equipment is not impaired. Do not use or install this
equipment in any manner other than that specified in this manual.

Use of hazard information

Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.
4 English
Details
"Smart" dynamic memory allocation automatically partitions memory to supply the
maximum logging time.
Memory mode: slate or wrap-around
128 kB of RAM (standard): 17,280 readings maximum; 512 kB of RAM (optional):
115,630 readings maximum
Daily statistics: 32 days kept maximum
Recording interval (configurable)
12–17 VDC pulse, 100 mA maximum at 500 ms duration
RS232 - up to 19,200 baud
Modem - 14,400 bps., V.32 bis. V.42, MNP2-4 error correction; V.42 bis MNP5 data
compression
SCADA - Modbus communication protocol (standard) through RS232 or optional
modem
4–20 mA outputs (maximum of 2), isolation voltage rating:
• Between instrument and either 4–20 mA output: 2500 VAC
• Between the two 4–20 mA outputs: 1500 VAC
• Maximum resistive load: 600 Ω
• Output voltage: 24 VDC, no load
Alarm relays (maximum of 4), form C relays, rated for 10 A at 120 VAC or 5 A at
240 VAC resistive load minimum; normally open and normally closed contacts
available
CE mark - some 950 models (such as 3248, 3522 and 2672). Refer to
requirements for CE marked instruments
CE mark - 230 V AC-DC power converter and cETLus 115 V AC-DC power converter
(UL/CSA 61010-1 Safety Standard)
N O T I C E
D A N G E R
on page 8.
Installation

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