Time Mark 456-15 Data Sheet

TIME MARK is a division of

MODEL 456-15

Pressure Transducer

 0 - 15 PSI pressure input

 4-20mA output

 High accuracy and repeatability

 Welded 316 SS construction

 Computer-tested and calibrated

 Unique cable seal system

 Fully temperature compensated

SPECIFICATIONS

DESCRIPTION

The Model 456-15 Pressure Transducer is designed
specifically to meet the rigorous environments
encountered in many level measurement applications.
This transducer provides repeatable, precise depth
measurements under the most adverse conditions. It
has been designed for installation in Class I, Division 1,
Groups A,B,C and D; Class II, Division 1, Groups
E,F,and G; Class III, Division 1 hazardous locations,
when connected to the appropriate Stahl apparatus.

The Model 456-15 features high performance internal
signal conditioning. An isolated diaphragm sensor has
been incorporated for use with hostile fluids and gases.
This sensor uses a silicon pressure cell that is fitted into
a stainless steel housing with an integral, compliant
stainless steel barrier diaphragm. The sensor assembly
is housed in a rugged, compact 316 SS case, which
provides for a variety of pressure inputs as well as
electrical output connections.

DIMENSIONS

Model 456-15

Pressure range 0 - 15 PSI

Static accuracy ± 1% FSO BFSL

Thermal error

Proof pressure 1.5 x rated pressure

Burst pressure 2.0 x rated pressure

Resolution Infinitesimal
Excitation 9 to 30VDC
Input current 20mA max.
Output current 4 - 20mA
Zero offset
Output impedance < 10 ohms
Insulation resistance 100 megohms at 50VDC
Circuit protection Polarity, surge/shorted output
Compensated temp +32º to +122º F
Operating temp range +14º to +140º F
Enclosure material 316 stainless steel
Mounting Suspended by cable
Weight 7 oz.
Cable

Agency Approvals Approvals to FM, CSA and UL are standard

other pressure ranges available upon request

Static accuracy includes the combined errors due to

nonlinearity, hysteresis & nonrepeatability on a “full
scale output” (FSO) “best fit straight line” (BFSL)

basis, at 25º C or 77º F, per ISA S51.1.

0.1% FSO/ºC worst case

Thermal error is the maximum allowable deviation
from BFSL due to a change in temperature, per ISA
S51.1.

4 - 20mA ± 0.12mA max.

30 feet; approx. 1.2 lbs. Polyurethane

jacketed shielded cable with polyethylene
vent tube and Kevlar tension members. 200
lbs. pull strength. 22 AWG conductors.
Approx. weight: 0.04 lb/ft. Tefzel jacket,
optional.

for Class I, Div 1, Groups A, B, C and D, and
Class II, Div 1, Groups E, F and G, and Class
III, Div 1 hazardous locations (install to
national & local codes w/ approved barrier).

Page 1 of 4 11/2011

© 2011 TIME MARK CORPORATION

TIME MARK is a division of

MODEL 456-15

Pressure Transducer

READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.

KEEP THIS DATA SHEET FOR FUTURE REFERENCE.

GENERAL SAFETY

POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 456-15.

ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.

THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.

Installation Instructions

APPLICATIONS

Suitable applications for the Model 456-15 Pressure
Transducer would include - well monitoring; lift stations;
dewatering; mobile containers; liquid level control;
process control; ground or surface water monitoring;
and pump control.

INSTALLATION

Most installations either suspend the Model 456-15

Pressure Transducer in a perforated 1 1/2” or 2” PVC

instrumentation still well, or attach the transducer to a
rigid conduit.

To install in rigid conduit: fit the transducer with a 1/2”

NPT male conduit fitting where the cable exits the
transducer. This fitting can then be mated to a
standard rigid conduit.

IN ALL INSTALLATIONS: Care should be taken in
the placement of the cable, as cable and vent tube
damage represents the most frequent causes of
transducer failure.

Connect the Model 456-15 Pressure Transducer as
shown in the appropriate unit diagram.

ADJUSTMENT

There are no adjustments to this device.

MOISTURE PROTECTION

Time Mark supplies a Vent Filter/Vapor Trap with each
Model 456-15 Pressure Transducer to ensure reliable
operation. This device protects sensitive electronic
components from mildew, corrosion and rust. It also
prevents the formation of a liquid column in the vent
tube, which would directly affect the calibration of the
Model 456-15 Transducer.

SIGNAL INPUT - Model 4042 Controller

SIGNAL INPUT - Model 4082 Controller

Page 2 of 4 11/2011

© 2011 TIME MARK CORPORATION