400/A series panel mount pumps

Overview

400/A compact micro-flow pumps

For precise control of low flow rates, the 400/A is the smallest pump in our range. There is one version for continuous tubing, and another for tube elements. It is available with a range of simple DC motors as well as a stepper motor for greater speed control. It is available in black and white, or custom colours. Also available as pumpheads only.

Features and benefits

Flow rates from 30 µl/min to 30 ml/min
Instrument quality in very compact size 31 x 48 mm
Spring-loaded track for precision and extended tube life
For 0.85 mm and 0.9 mm tube wall thickness
Compatible with continuous tubing or tube elements
12 V and 24 V DC drives with a range of maximum speeds
Pumphead available in standard or high pressure

Technical summary

Motor types	Fixed speed DC motor, Stepper motor
Pumphead options	400/A

Technical Summary table lists features available within the range. See ‘Specifications’ tab for model specific information.

Performance

400 FD/A pump performance

400FD/A pumps

Flow rates (ml/min)
Tube bore (mm)	(ml/rev)	Speed (rpm)
		13	26	35	47	74	155	290
0.25	0.0025	0.03	0.07	0.09	0.12	0.19	0.39	0.73
0.51	0.0097	0.13	0.25	0.34	0.46	0.72	1.5	2.8
0.76	0.020	0.26	0.52	0.7	0.94	1.5	3.1	5.8
1.02	0.034	0.44	0.88	1.2	1.6	2.5	5.3	9.9
1.22*	0.046	0.6	1.2	1.6	2.2	3.4	7.1	13
1.52	0.068	0.88	1.8	2.4	3.2	5	11	20
2.06	0.104	1.4	2.7	3.6	4.9	7.7	16	30

Note: Reduced tube life with tube sizes from 1.65mm up to 2.06mm

Santoprene tubing wall 0.85mm, zero pressure and no suction height

All flow figures are nominal and may vary +/-10% depending on tube tolerances

* This dimension is only available in PVC

Specifications

Technical specifications

	400 FD/A	400 ST/A
Motor types	Fixed speed DC motor	Stepper motor
Pumphead options	400/A	400/A
Min. flow rate	0.03 ml/min
Max. flow rate	30 ml/min	30 ml/min
Min. operating speed		0 rpm
Max. operating speed	290 rpm	290 rpm
Supply voltage	12 V DC, 24 V DC
Weight	0.14 kg
Gearbox ratio	Spur; 188:1, Spur; 21:1, Spur; 43:1, Spur; 90:1
Compatible tubing bore size	0.25, 0.51, 0.76, 1.02, 1.22, 1.52, 2.06 mm
Compatible tubing wall thickness	0.85 mm	0.85 mm

400 FD/A pump dimensions

Materials of construction

Pumphead body assembly	Acetal (black), Polyester resin (PET)
Pumphead rotor assembly	Acetal (black), Stainless steel
Pumphead roller assembly	Acetal (black)
Driveshaft	Stainless steel
Springs	Stainless steel

Information listed covers the complete range. For detailed specifications of individual models/components refer to product reference manual or contact WMFTS representative.