Emerson 3812 User Manual

May 2015

3-9000-765 Rev H

3.6.2

Analog input settings

The 960-24™ MSTS has the capability to sample analog temperature (Analog Input 1) and 
pressure (Analog Input 2) with 4-20 mA signals. These analog input signals are configured to 
sink. The two independent analog input circuits are configured for conventional 4-20 mA 
service. Also, 24VDC isolated power supply connection is provided for an external power source. 
Refer to the Field wiring diagram (

 drawing DMC004936).

3.6.3

Analog output settings

The 960-24™ MSTS provides two 4-20 mA analog output signals that are software configurable 
for either sink or source current (

 drawing DMC004936).

Full HART® functionality is provided so that any commercially available HART® transmitter 
which meets the specifications of the HART® Communications Foundation can be connected to 
the Daniel 3812 Liquid Ultrasonic Flow Meter. 

Analog Output 2 (AO2) is user-configurable as a conventional 4-20 mA output.

3.6.4

Digital Input

The Daniel 3812 Liquid Ultrasonic Flow Meter provides one digital input that can be used as a 
general purpose input or used for synchronizing calibration (for flow calibration gating - contact 
closure). The meter records the volume seen between switch closures. The polarity of the input 
is configured as normal or inverted polarity.

•

polarity is determined by the IsDI1ForCalActiveLow  and the gating edge is determined by 
the IsDI1ForCalStateGated (calibrate edge gated or calibrate state gated).

•

calibration is started and stopped via an inactive>active state change. 

The digital input must be configured via the Daniel MeterLink Tools>Edit/Compare 
Configuration page.

3.6.5

DHCP server switch settings

The meter can be configured to act as a DHCP server. The DHCP server is enabled/disabled via 
CPU Module DHCP switch as follows:

DHCP

OFF

ON