Type 8701

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1.

General Technical Data

Product properties

Material

Block

Aluminium or stainless steel

Body

PC (Polycarbonate) or metal

Seal

FKM, EPDM

Dimensions

Detailed information can be found in chapter “3. Dimensions” on page 5.

Total weight

approx. 500 g (Aluminium)

LED display

Indication for power, limit (with analogue signals) / communication (with fieldbus) and

error

Performance data

Nominal flow range (Q

Nom)

1.)

10 ml

N/min…80 lN/min (N2)

Detailed information can be found in chapter “6.2. Flow characteristic” on page 9.

Measuring range

1:50 (2…100 %), higher measuring range on request

Max. operating pressure

10 bar (145 psi)

Measuring accuracy

± 0.8 % o. R. ± 0.3 % F. S. (after 15 min. warm up time)

Repeatability

± 0.1 % F. S.

Response time (t95 %)

< 300 ms

Electrical data

Operating voltage

24 V DC

Power consumption1.)

2.5 W / 5 W (with fieldbus)

Voltage tolerance

± 10 %

Residual ripple

< 2 %

Electrical connection

D-Sub plug 15 pin

with PROFIBUS-DP: Socket M12 5 pin

with CANopen: Socket M12 5 pin

Medium data

Operating medium

Neutral, or aggressive gases others on request

Calibration medium

Operating gas or air with conversion factor

Medium temperature

- 10 °C…+ 70 °C

(- 10 °C…+ 60 °C for oxygen)

Process/Port connection & communication

Port connection

NPT ¼, G ¼, screw-in fitting or sub-base, others on request

Fieldbus option

PROFIBUS-DP, CANopen

Digital outputs

One relay-output for:

1. Limit (process value close to Q

Nom)

Current output: 25 V, 1 A, 25 VA

Digital inputs

Two

1. Not assigned

2. Not assigned

Digital (communication) interface

RS232, Modbus RTU (via RS-Adapter) RS485, RS422 or USB

(see “7.4. Ordering chart accessories” on page 10)

Analogue interfaces

4…20 mA, 0…20 mA, 0…10 V or 0…5 V

Input impedance > 20 kΩ (Voltage) resp. < 300 Ω (Current)

Max. load: 10 mA (Voltage output); max. load: 600 Ω (Current output)

Environment and installation

Installation position

Horizontal or vertical

Ambient temperature

- 10 °C…+ 50 °C

Degree of protection

IP40

Accessories

Software-Tool

Mass Flow Communicator

1.) The nominal flow value is the max. flow value calibrated which can be measured.

The nominal flow range defines the range of nominal flow rates (full scale values) possible.

2.) Index N: Flow rates referred to 1.013 bar and 0 °C. Alternatively there is an

Index S available which refers to 1.013 bar and 20 °C.