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GENERAL DESCRIPTION:
The KDG/KDF micro flowmeters operate on
the float principle and are designed to
measure low gas and liquid flows. Flow can
be set exactly within the measuring range
using the integral precision metering valve.
The contrasting color background of the
scale permits accurate data readings.
Additionally, 1 or 2 adjustable switches may
be mounted to identify certain flow
conditions. A panel mounting kit is
available as an option.
Options
1. Limit Switches
All meter ranges which have a stainless
steel float can be fitted with optional,
adjustable switches. Two types are
available:
Monostable: Switch activates momentarily
as the stainless steel float passes by on
rising flow.
Bistable: Switch stays activated until the
float falls past the switch on decreasing
flow.
Switch Specifications
Output Type: NAMUR per DIN 19234
(use EX-3001 or
EX-3002 as isolation
relay, sold separately)
2. Junction Box
A junction box is available for flowmeters
with switches. The Junction-box contains
a terminal block to facilitate making wiring
connections. Flowmeters with switches
which do not have a junction box will have
wiring connections made via wire-leads
fed through the bottom of the meter body.
3. Constant Flow Controllers
Two types of constant flow controllers are
available. Types RE and NRE upstream pressure controllers. They hold flowrate
constant when there is a varying
downstream pressure and constant
upstream pressure. All regulators are
available in nickel-plated steel or brass.
4. Panel Mounting Kit
All flowmeters are available with an
attached panel mounting plate and
mounting hardware. The mounting plate is
made of anodized Aluminum. The panel
cut-out required to accommodate the
panel mounting plate is 3.15” x 1.57”
(80mm X 40 mm).
5. Custom Scales
Custom, direct reading scales are available
for the KDG and KDF series. The custom
scales allow for a direct reading, calibrated
for specific gravity, viscosity operating
pressure or temperature. Any desired
measuring units are possible.
Specifications
Accuracy: ±2.5% full scale
Repeatability: ±0.6% full scale
Connection: NPT 1/4
Mounting position: Vertically, media flow
from bottom to top.
Max. Pressure
Brass or SS Fitting: 145 PSIG
PVDF Fitting: 85 PSIG
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Max. Temperature: 210°F
Fittings: brass, 316-Ti SS, or PVDF
Measuring cone: Borosilicate glass with
yellow background
Float stop: PVDF
Gaskets: Viton, or Chemraz
Valve: 316-Ti SS
Contact: (optional) bistable or
monostable proximity switch for units with
SS floats.
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Ordering Information
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Bi-stable Switch Operation |
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Contacts are bistable ring initiators, with 2
initiators located one above the other in one
housing. This pairing permits identification
of the direction of movement of the float.
The ring initiator thus provides bistable
switch function based on the position of the
float, whether above or below the initiator
block. The direction of action can be
reversed by turning the ring initiators around
(change over top and bottom). One
transistor relay (order no. Ex 3011) is
required for each circuit (double version not
available).
Connection Diagram
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