Density Meter LB 444 SECTION 5. GETTING STARTED
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5. GETTING STARTED
5.1 Quick Installation Overview
1. Install detector and source with shielding at a container or on a
pipeline to be measured, taking into account the optimum meas-
urement conditions:
On pipelines:
In containers
2. Use a water cooling if temperatures >50°C.
3. To perform temperature compensation with Pt 100 (Option), install
resistance thermometer on pipeline such that the measured tem-
perature = product temperature. Resistance thermometer must not
be in radiation path!
4. Install evaluation unit.
5. Connect detector to LB 444 via two-wire cable. Connect cable to
terminal 2a and 2c of the evaluation unit. In case of high ambient
temperature, install water cooling.
6. For temperature compensation via external current input (option):
Connect temperature sensor to terminal 28a+ and 28c- (not for
mass flow measurement).
7. Only for mass flow measurement: The volume current signal can be
fed in via terminals 28a+ and 28c-. Temperature compensation is
possible only via Pt 100 connected to the detector.
8. External product selection (Option):
For external product selection. If you want to install external product
selection, both digital inputs have to be used so that 4 different
products can be selected.
Digital input 1: Terminals: 18a and 18c
Digital input 2: Terminals: 20a and 20c
9. External Start/Stop signal :
The digital input 3 (22a and 22c) can be used for the following sig-
nals:
a) Start/Stop in batch mode
b) Stop continuous measurement
c) Restart after interruption of measurement due to interfering radia-
tion.
10. Digital outputs:
These outputs can be used for the following message signals (op-
tion):
12a, 12c: Rel. 2 Min1/Max1
14a, 14c: Rel. 3 Min2/Max2
16a, 16c: Rel. 1 Error message
see Manual
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