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Flow meters of Standard Gases-845G
 
 
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  • Rugged & Time Proven Designs
  • Microprocessor type and Fully Configurable
  • Computes Mass Flow rate as per Standard Gas Equations
  • Pressure / Temp. Compensations given
  • Retransmission output on FLOW RATE
  • 8 digit resolution for Totalizer / Batch value
  • Transmitter P.S. @ 24 V DC for each transmitterTransmitter P.S. @ 24 V DC for each transmitter
  • Various sizes / Mountings / Enclosures supported
 
MASS FLOW INDICATORS / CONTROLLERS GAS FLOW MODEL 845G

( Microprocessor based electronics )

 

Introduction

 

Pantech Instrument’s Model 845G represents FLOW INDICATORS / TOTALIZERS / CONTROLLERS for mass flow applications related to STANDARD GASES flow. The instrument is so designed to accept 3 inputs of FLOW, PRESSURE and TEMPERATURE at a time. Based on these inputs, and high end algorithms of STANDARD GAS EQUATIONS fed in the chip, the instrument calculates MASS INSTANTANEOUS FLOW RATE to a resolution of 4/4.5 digits. TOTALIZED value is displayed through 8 digits red LED and this totalizer value is always protected against power failures through internal memory structures of microprocessor. Optionally the instrument is designed to give two contact relay outputs and a RETRANSMISSION ISOLATED signal on INSTANTANEOUS FLOW RATE. Serial communication outputs for computer system interfaces are also given optionally. All configurations, calibrations and output fine tunings etc. can be performed by front four keys only without opening the instrument. In the core of all the functions lies the latest and highly proven microprocessor based chipsets. The high end softwares ensure the most user friendly interactions by the user. The instrument incorporates low drift operational amplifiers and industrial grade components for long trouble free operation. Burn in of each module ensures long trouble free operations.


Model 845G at a glance :

  1. Used for the MASS FLOW CALCULATION of GASES that follow STANDARD GAS EQUATION.

  2. Accepts three inputs – FLOW ( mA ), PRESSURE ( mA ), TEMP ( mA / RTD Pt.100 / Thcpl ).

  3. Gives efficient Pressure and Temp. Compensations for MASS FLOW CALCULATIONS.

  4. Refers Hi end Algorithms of Standard Gas Equations.

  5. The user is allowed to FEED IN – Maximum Pressure Transmitter range in Kg/cm2, Operating pressure in Kg/cm2, Operating temp. in deg. C, Flow rate.


Pre-requisite data from the client :

  1. Max. / Min. / Operating Flow rates of the system

  2. Max. / Min. / Operating Pressure in line

  3. Line size

  4. Metering principle – Orifice / Vortex

  5. Gas name

 
Specifications
 
Inputs – 3 nos.

FLOW– 4-20mA / 0-20 mA DC / other linear type

PRESSURE – 4-20 mA / 0-20 mA DC / other linear type

TEMP.- 4-20 mA DC / RTD Pt. 100-3 wire / Thcpl with type

* The user can choose to bypass any of the pressure or temp. signal input incase that compensation not reqd. however in this case, the gas type and its flow calculation is a virtue of its input types totally.

 

Calculations – fixed

Standard Gas equations

 

Analog output
  1. Isolated / Non Isolated 4 – 20 mA DC

  2. Isolated / Non Isolated 0-10 V DC

3) Other types on factory confirmations

 

Contact output

Maximum 2 sets of C,NC,NO on FLOW RATE

 

Display (any one type)

  1. 4 digit red LED for Instant flow rate, 4 digit green LED for Engg. Unit display, 8 digit red LED for totalized value ( LED size : 0.25” ) ( Engg. Units selectable )

 

Accuracy

+/-0.1% of span

 

Transmitter Power

3*24 V DC @ 40 mA

Other types on factory confirmations

 

Power supply
  1. 24 V DC

  2. 110 V AC, 50 Hz, +/- 10%

  3. 230 V AC, 50 Hz, +/- 10%

  4. 90-270 V AC – SMPS type

  5. Specials on factory confirmations

 

Backup

Zero power RAM provided backup for data

 

Power consumption

6 VA max.

 

Ambient temperature

0 – 50 °C.

 

Storage temperature

0 – 70 °C.

 

Humidity

90% RH (non-condensing)

 

Security

Single level – Password protected

 

Enclosures

Weatherproof, Flameproof and all other standard types

 

Mounting

Panel / Wall / Field

 

Dimensions

96*96 / 72*144 / 144*144 / SPECIALS


*All config/calibration from front keys only

 

  • Following table describes the availability of several models with the company right now. A general preview is only presented to the user. The dimensional and display sizes are the relational virtues of each other and hence the user is always requested to clarify the specifications of instrument with the factory prior to placement of the order.

  • On confirmation with factory, changes of all types in all specifications is possible


 

Model

Mounting & Dimension in mm (H * W * D)

Input

Power

Output option

Indication Options

Display size

Analog output

Contact output

Display resolution

Counter resolution

845G

Panel









96*96*150

All

All

Yes

Yes

4 digit

8 digit

½“- ¼” size

144*72*150

All

All

Yes

Yes

4 digit

8 digit

½”- ¼” size

144*144*150

All

All

Yes

Yes

4 digit

8 digit

½” size

Wall

Opttimum

All

All

Yes

Yes

4 digit

8 digit

4” size

 
 
Ordering Information ( 12 digits )
 

Please confirm the availability of the model by cross checking the table mentioned on the backside.

Basic Model No. (Specified by first 3 digits)

845G - Mass flow meters for STD.GAS

Mounting & Encl. (Specified by letter following 3 digits)

P - Weatherproof - Panel

W - Weatherproof - Wall

F - Flameproof - Wall / field

I - IP65 grade – wall / field

S - Specials

Flow Principle (Specified by the next digit / letter)

O - Orifice type

V - Vortex type

Input (Specified by the next digit / letter)

1 - 3 * ( 4-20 mA DC )

2 - 2 * ( 4-20 mA DC ) & RTD

3 - 2 * ( 4-20 mA DC ) & Thcpl

 

Power option (Specified by the next digit / letter)

1 - 24 V DC

2 - 110 V AC

3 - 230 V AC

4 - 90-270 V AC – SMPS type

S - Specials

Analog O/P Option (Specified by the next digit / letter)

0 - None

1 - mA/V DC isolated

2 - mA/V DC non-isolated

S - Specials

Contact output option (Specified by the next digit / letter)

0 - None

1 - 1NO + 1NC on flow

2 - NO + 2NC on batch

** Please mention the color of displays clearly

 

** Customized developments can be made if the quantity permits

 
 

Made in India By:

 

PANTECH INSTRUMENTS,

102, Shailja Complex II,

Akota – Padra Road,

Nr. R. C. Patel Ind. Estate,

Vadodara – 390 020.

Telefax: (265) 2331380/6616080

Mobile: +9198240 16466/ + 9199242 10722