2 standard specifications, 2 standard specifications -6 – Yokogawa RAKD User Manual

Page 36

IM 01R01B30-00E-E 5th edition January 01, 2013 -00

<7. TECHNICAL DATA>

7-6

7.2 Standard Specifications

The responsibility with respect to the suitability and
according application of our flowmeter is only situated by
the customer.

MEASURING TUBE

Materials of wetted parts : Stainless steel AISI 316Ti

(1.4571)

other materials on request

Fluids to be measured

: Liquid or gas

Measuring range

: see flow table

Measuring range ratio

: 10:1

Process connections

– Inner thread

: G1/4; 1/4 NPT; G 3/8; 3/8; NPT

– Cutting ring

: 6 mm; 8 mm; 10 mm; 12 mm

– Cutting ring (Swagelok)

: 6 mm; 8 mm; 10 mm; 12 mm

– Nozzle

: 6 mm; 8 mm

– Flange

: - acc. EN 1092-1

DN15 and DN25 PN40;

acc. ASME B 16.5 ½” and 1”

150 lbs, 300 lbs

- gasket PTFE

Process pressure

: depends on process

connection; see model code

Process temperature

: without valve -25°C to 250°C

with valve -25°C to 150°C

See also fig. 6. Lower

temperatures on request.

Measurement accuracy

: acc. Directive VDI/VDE 3513

sheet 2 (q

=50%) 4%

Installation :
– Installation position

: vertical

– Flow direction

: upwards

– Face to face length

: 125 mm (with flange 250 mm)

Weight

: see table 7-14

LOCAL INDICATOR

(Indicator/Code -T)

Principle :
The indication is made by magnetic coupling of a magnet
enclosed in the float and a magnet in the indication unit,
which follows the movements of the float.

Indication scale

: Flow units

Indicator housing
– Material

: Stainless steel AISI 304

(1.4301)

– Degree of Protection

: IP66/67

Scales :

- Standard : removable aluminium plate with scale

(double scale as option)

Transportation and storage condition

: - 40°C to +110°C

ELECTRONIC TRANSMITTER

(Indicator/Code -E)

Temperature range

: -25°C to +65°C

Transportation and storage condition

: -40°C to +70°C

Process-/ Ambient temperature :

The dependency of the process temperature from the

ambient temperature is shown in fig.6.

Power supply

: 14 ... 30 V DC

Load resistance : (U - 14V) / 20 mA, max. 500 Ω

Analog output : 4-20 mA
Linearity

: ≤ ± 0.25% f.s.

Hysteresis

: ≤ ± 0.15% f.s.

Repeatability

: ≤ ± 0.16% f.s.

Influence of power supply

: ≤ ± 0.1% f.s.

Temp. coefficient of analog output

: ≤ ± 0.5% /10 K f.s.

AC-part of analog output

: ≤ ± 0.15% f.s.

Long time stability : ≤ ± 0.2% / year
Maximum output current

: 21.5 mA

Output current in case of failure

: ≤ 3.6 mA (NAMUR NE 43)

Response time (99%)

: approx. 1 s

Pulse output (Option /CP)

Electronic switch with galvanic

isolation

acc. EN 60947-5-6 (NAMUR)

- Pulse length

: 200 ms

- Max. frequency : 4 Hz
- Pulse rate

: Qmax ≤ 1 → 0.0001

: 1 < Qmax ≤ 10 → 0.001 etc.

e.g.. Qmax = 1 m3/h →

1 Puls = 0.0001 m

= 0.1

Electromagnetic compatibility (EMC)
- EN 61326-1: 2006, Class A, Table 2
EN 61326-2-3 : 2006

POWER SUPPLY FOR ELECTRONIC TRANSMITTER
(Option /UT)

Type :

Power supply with galvanically separated input and output

- RN221N-B1, HART- compatible

Supply voltage :

20 ... 250 V DC / AC 50/60 Hz

Maximum load :

700 Ω

Output signal :

4 - 20 mA

ELECTRICAL CONNECTION (Indicator/Code -E) :

Type

Quickon

Cable diameter : 4 – 6 mm
Maximum cross section of core

: Ø 0.34 to 0.75 mm