MODEL 346 INSTALLATION AND OPERATION MANUAL
Section 1
Page 1 - 2
HA243821
Issue 5 Mar 98
1.1 INTRODUCTION
This manual is intended to familiarise the user with the installation, operation and maintenance of the Model
346 recorder. The manual is organised into sections, as follows:
Section 1 describes the manual and its organisation, and includes the recorder specification.
Section 2 contains mechanical and electrical installation procedures, including the placement of circuit board
links as appropriate.
Section 3 describes the operation of the recorder. Mechanically, chart, printhead and battery replacement are
described. The recorder display/keyboard and the associated operator menu are also described
Section 4 covers the setting-up (configuration) of the basic recorder to user requirements.
Section 5 details the recorder configuration of options such as totalisers, derived channels (maths pack) etc.
Section 6 gives information on simple servicing, using the recorder self checking, calibration and Instrument
alarm features. Also included is a list of spare parts.
Annex A is a quick reference guide to the recorder configuration, including a description of all the configurable
parameters, and an ‘access to configuration’ diagram showing the complete configuration menu arrangement.
1.2 RECORDER DESCRIPTION
The Model 346 recorder is a user configurable 1 to 6 input, multipoint 100 mm. calibrated-width instrument
using digital indication to display measured value. The use of modular construction and surface-mount circuit
card technology ensures a compact design which is easy to maintain and upgrade.
Configuration is carried out using the recorder display and integral keyboard. The Configuration Menu is divided
into sections for fast basic set-up, and for selection of only those functions needed for a particular application.
1.3 SPECIFICATION
HARDWARE RANGES
The specification which follows, contains references to ‘Hardware Ranges’. When an input range is defined,
the recorder chooses the lowest hardware range (i.e. the most accurate) that will cover the specified input
range. (Table 1.3 gives details of the ranges.) The user can, if he wishes, force the recorder to use a specific
hardware range, using the channel range calibration pages described in section 6 of this manual.
Table 1.3 Hardware ranges, minimum spans, input and pen accuracies.
HARDWARE
RANGE
- 4.0 to +20mV
-12.0 to +60 mV
-16 to +80 mV
- 40 to 200 mV
- 80 to 400 mV
- 0.34 to 1.7 V
- 0.50 to + 2.5 V
-1.00 to + 5.0 V
I/P
ACCURACY
PEN
ACCURACY
MINIMUM
SPAN
± 0. 0 2 mV
± 0. 0 6 mV
± 0. 0 8 mV
± 0. 2 0 mV
± 0. 4 0 mV
± 1 . 7 mV
± 2 . 5 mV
± 5 m V
± 0. 04 mV
± 0. 12 mV
± 0. 16 mV
± 0. 40 mV
± 0. 80 mV
± 3. 4 m V
± 5 mV
± 1 0 m V
4 mV
1 5 m V
2 0 m V
5 0 m V
1 00 m V
4 25 m V
6 25 m V
1. 2 5 V
